diff --git a/Makefile b/Makefile
index ae88bacf..b698ac09 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,9 @@
+GO ?= go
 GOFMT ?= gofmt "-s"
-PACKAGES ?= $(shell go list ./... | grep -v /vendor/)
-VETPACKAGES ?= $(shell go list ./... | grep -v /vendor/ | grep -v /examples/)
+PACKAGES ?= $(shell $(GO) list ./... | grep -v /vendor/)
+VETPACKAGES ?= $(shell $(GO) list ./... | grep -v /vendor/ | grep -v /examples/)
 GOFILES := $(shell find . -name "*.go" -type f -not -path "./vendor/*")
+TESTFOLDER := $(shell $(GO) list ./... | grep -E 'gin$$|binding$$|render$$' | grep -v examples)
 
 all: install
 
@@ -10,7 +12,14 @@ install: deps
 
 .PHONY: test
 test:
-	sh coverage.sh
+	echo "mode: count" > coverage.out
+	for d in $(TESTFOLDER); do \
+		$(GO) test -v -covermode=count -coverprofile=profile.out $$d; \
+		if [ -f profile.out ]; then \
+			cat profile.out | grep -v "mode:" >> coverage.out; \
+			rm profile.out; \
+		fi; \
+	done
 
 .PHONY: fmt
 fmt:
@@ -18,7 +27,6 @@ fmt:
 
 .PHONY: fmt-check
 fmt-check:
-	# get all go files and run go fmt on them
 	@diff=$$($(GOFMT) -d $(GOFILES)); \
 	if [ -n "$$diff" ]; then \
 		echo "Please run 'make fmt' and commit the result:"; \
@@ -27,14 +35,14 @@ fmt-check:
 	fi;
 
 vet:
-	go vet $(VETPACKAGES)
+	$(GO) vet $(VETPACKAGES)
 
 deps:
 	@hash govendor > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		go get -u github.com/kardianos/govendor; \
+		$(GO) get -u github.com/kardianos/govendor; \
 	fi
 	@hash embedmd > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		go get -u github.com/campoy/embedmd; \
+		$(GO) get -u github.com/campoy/embedmd; \
 	fi
 
 embedmd:
@@ -43,21 +51,21 @@ embedmd:
 .PHONY: lint
 lint:
 	@hash golint > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		go get -u github.com/golang/lint/golint; \
+		$(GO) get -u golang.org/x/lint/golint; \
 	fi
 	for PKG in $(PACKAGES); do golint -set_exit_status $$PKG || exit 1; done;
 
 .PHONY: misspell-check
 misspell-check:
 	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		go get -u github.com/client9/misspell/cmd/misspell; \
+		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
 	fi
 	misspell -error $(GOFILES)
 
 .PHONY: misspell
 misspell:
 	@hash misspell > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
-		go get -u github.com/client9/misspell/cmd/misspell; \
+		$(GO) get -u github.com/client9/misspell/cmd/misspell; \
 	fi
 	misspell -w $(GOFILES)
 
diff --git a/README.md b/README.md
index 6fd2dd34..95bd3204 100644
--- a/README.md
+++ b/README.md
@@ -1721,11 +1721,11 @@ type StructX struct {
 }
 
 type StructY struct {
-    Y StructX `form:"name_y"` // HERE hava form
+    Y StructX `form:"name_y"` // HERE have form
 }
 
 type StructZ struct {
-    Z *StructZ `form:"name_z"` // HERE hava form
+    Z *StructZ `form:"name_z"` // HERE have form
 }
 ```
 
diff --git a/auth_test.go b/auth_test.go
index ab7e94be..197e9208 100644
--- a/auth_test.go
+++ b/auth_test.go
@@ -122,7 +122,7 @@ func TestBasicAuth401(t *testing.T) {
 
 	assert.False(t, called)
 	assert.Equal(t, http.StatusUnauthorized, w.Code)
-	assert.Equal(t, "Basic realm=\"Authorization Required\"", w.HeaderMap.Get("WWW-Authenticate"))
+	assert.Equal(t, "Basic realm=\"Authorization Required\"", w.Header().Get("WWW-Authenticate"))
 }
 
 func TestBasicAuth401WithCustomRealm(t *testing.T) {
@@ -142,5 +142,5 @@ func TestBasicAuth401WithCustomRealm(t *testing.T) {
 
 	assert.False(t, called)
 	assert.Equal(t, http.StatusUnauthorized, w.Code)
-	assert.Equal(t, "Basic realm=\"My Custom \\\"Realm\\\"\"", w.HeaderMap.Get("WWW-Authenticate"))
+	assert.Equal(t, "Basic realm=\"My Custom \\\"Realm\\\"\"", w.Header().Get("WWW-Authenticate"))
 }
diff --git a/context_17_test.go b/context_17_test.go
index d2251904..5b9ebcdc 100644
--- a/context_17_test.go
+++ b/context_17_test.go
@@ -23,5 +23,5 @@ func TestContextRenderPureJSON(t *testing.T) {
 	c.PureJSON(http.StatusCreated, H{"foo": "bar", "html": "<b>"})
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "{\"foo\":\"bar\",\"html\":\"<b>\"}\n", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
diff --git a/context_test.go b/context_test.go
index 5a5bb6e1..2e972f18 100644
--- a/context_test.go
+++ b/context_test.go
@@ -628,7 +628,7 @@ func TestContextRenderJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "{\"foo\":\"bar\",\"html\":\"\\u003cb\\u003e\"}", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that the response is serialized as JSONP
@@ -642,7 +642,7 @@ func TestContextRenderJSONP(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "x({\"foo\":\"bar\"})", w.Body.String())
-	assert.Equal(t, "application/javascript; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/javascript; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that the response is serialized as JSONP
@@ -656,7 +656,7 @@ func TestContextRenderJSONPWithoutCallback(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "{\"foo\":\"bar\"}", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no JSON is rendered if code is 204
@@ -668,7 +668,7 @@ func TestContextRenderNoContentJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that the response is serialized as JSON
@@ -682,7 +682,7 @@ func TestContextRenderAPIJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "{\"foo\":\"bar\"}", w.Body.String())
-	assert.Equal(t, "application/vnd.api+json", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/vnd.api+json", w.Header().Get("Content-Type"))
 }
 
 // Tests that no Custom JSON is rendered if code is 204
@@ -695,7 +695,7 @@ func TestContextRenderNoContentAPIJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, w.HeaderMap.Get("Content-Type"), "application/vnd.api+json")
+	assert.Equal(t, w.Header().Get("Content-Type"), "application/vnd.api+json")
 }
 
 // Tests that the response is serialized as JSON
@@ -708,7 +708,7 @@ func TestContextRenderIndentedJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "{\n    \"bar\": \"foo\",\n    \"foo\": \"bar\",\n    \"nested\": {\n        \"foo\": \"bar\"\n    }\n}", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no Custom JSON is rendered if code is 204
@@ -720,7 +720,7 @@ func TestContextRenderNoContentIndentedJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that the response is serialized as Secure JSON
@@ -734,7 +734,7 @@ func TestContextRenderSecureJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "&&&START&&&[\"foo\",\"bar\"]", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no Custom JSON is rendered if code is 204
@@ -746,7 +746,7 @@ func TestContextRenderNoContentSecureJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 func TestContextRenderNoContentAsciiJSON(t *testing.T) {
@@ -757,7 +757,7 @@ func TestContextRenderNoContentAsciiJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "application/json", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json", w.Header().Get("Content-Type"))
 }
 
 // Tests that the response executes the templates
@@ -773,7 +773,7 @@ func TestContextRenderHTML(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "Hello alexandernyquist", w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 func TestContextRenderHTML2(t *testing.T) {
@@ -797,7 +797,7 @@ func TestContextRenderHTML2(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "Hello alexandernyquist", w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no HTML is rendered if code is 204
@@ -811,7 +811,7 @@ func TestContextRenderNoContentHTML(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextXML tests that the response is serialized as XML
@@ -824,7 +824,7 @@ func TestContextRenderXML(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "<map><foo>bar</foo></map>", w.Body.String())
-	assert.Equal(t, "application/xml; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/xml; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no XML is rendered if code is 204
@@ -836,7 +836,7 @@ func TestContextRenderNoContentXML(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "application/xml; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/xml; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextString tests that the response is returned
@@ -849,7 +849,7 @@ func TestContextRenderString(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "test string 2", w.Body.String())
-	assert.Equal(t, "text/plain; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no String is rendered if code is 204
@@ -861,7 +861,7 @@ func TestContextRenderNoContentString(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "text/plain; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextString tests that the response is returned
@@ -875,7 +875,7 @@ func TestContextRenderHTMLString(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "<html>string 3</html>", w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // Tests that no HTML String is rendered if code is 204
@@ -888,7 +888,7 @@ func TestContextRenderNoContentHTMLString(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextData tests that the response can be written from `bytesting`
@@ -901,7 +901,7 @@ func TestContextRenderData(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "foo,bar", w.Body.String())
-	assert.Equal(t, "text/csv", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/csv", w.Header().Get("Content-Type"))
 }
 
 // Tests that no Custom Data is rendered if code is 204
@@ -913,7 +913,7 @@ func TestContextRenderNoContentData(t *testing.T) {
 
 	assert.Equal(t, http.StatusNoContent, w.Code)
 	assert.Empty(t, w.Body.String())
-	assert.Equal(t, "text/csv", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/csv", w.Header().Get("Content-Type"))
 }
 
 func TestContextRenderSSE(t *testing.T) {
@@ -942,7 +942,7 @@ func TestContextRenderFile(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Contains(t, w.Body.String(), "func New() *Engine {")
-	assert.Equal(t, "text/plain; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextRenderYAML tests that the response is serialized as YAML
@@ -955,7 +955,7 @@ func TestContextRenderYAML(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, "foo: bar\n", w.Body.String())
-	assert.Equal(t, "application/x-yaml; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/x-yaml; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestContextRenderProtoBuf tests that the response is serialized as ProtoBuf
@@ -979,7 +979,7 @@ func TestContextRenderProtoBuf(t *testing.T) {
 
 	assert.Equal(t, http.StatusCreated, w.Code)
 	assert.Equal(t, string(protoData), w.Body.String())
-	assert.Equal(t, "application/x-protobuf", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/x-protobuf", w.Header().Get("Content-Type"))
 }
 
 func TestContextHeaders(t *testing.T) {
@@ -1062,7 +1062,7 @@ func TestContextNegotiationWithJSON(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Equal(t, "{\"foo\":\"bar\"}", w.Body.String())
-	assert.Equal(t, "application/json; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/json; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 func TestContextNegotiationWithXML(t *testing.T) {
@@ -1077,7 +1077,7 @@ func TestContextNegotiationWithXML(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Equal(t, "<map><foo>bar</foo></map>", w.Body.String())
-	assert.Equal(t, "application/xml; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "application/xml; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 func TestContextNegotiationWithHTML(t *testing.T) {
@@ -1095,7 +1095,7 @@ func TestContextNegotiationWithHTML(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Equal(t, "Hello gin", w.Body.String())
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 func TestContextNegotiationNotSupport(t *testing.T) {
@@ -1131,7 +1131,7 @@ func TestContextNegotiationFormatWithAccept(t *testing.T) {
 	assert.Empty(t, c.NegotiateFormat(MIMEJSON))
 }
 
-func TestContextNegotiationFormatCustum(t *testing.T) {
+func TestContextNegotiationFormatCustom(t *testing.T) {
 	c, _ := CreateTestContext(httptest.NewRecorder())
 	c.Request, _ = http.NewRequest("POST", "/", nil)
 	c.Request.Header.Add("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
@@ -1627,9 +1627,9 @@ func TestContextRenderDataFromReader(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Equal(t, body, w.Body.String())
-	assert.Equal(t, contentType, w.HeaderMap.Get("Content-Type"))
-	assert.Equal(t, fmt.Sprintf("%d", contentLength), w.HeaderMap.Get("Content-Length"))
-	assert.Equal(t, extraHeaders["Content-Disposition"], w.HeaderMap.Get("Content-Disposition"))
+	assert.Equal(t, contentType, w.Header().Get("Content-Type"))
+	assert.Equal(t, fmt.Sprintf("%d", contentLength), w.Header().Get("Content-Length"))
+	assert.Equal(t, extraHeaders["Content-Disposition"], w.Header().Get("Content-Disposition"))
 }
 
 type TestResponseRecorder struct {
diff --git a/coverage.sh b/coverage.sh
deleted file mode 100644
index 4d1ee036..00000000
--- a/coverage.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-echo "mode: count" > coverage.out
-
-for d in $(go list ./... | grep -E 'gin$|binding$|render$' | grep -v 'examples'); do
-    go test -v -covermode=count -coverprofile=profile.out $d
-    if [ -f profile.out ]; then
-        cat profile.out | grep -v "mode:" >> coverage.out
-        rm profile.out
-    fi
-done
diff --git a/gin.go b/gin.go
index 11f6d94a..92c24ba2 100644
--- a/gin.go
+++ b/gin.go
@@ -336,7 +336,6 @@ func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 func (engine *Engine) HandleContext(c *Context) {
 	c.reset()
 	engine.handleHTTPRequest(c)
-	engine.pool.Put(c)
 }
 
 func (engine *Engine) handleHTTPRequest(c *Context) {
diff --git a/gin_integration_test.go b/gin_integration_test.go
index 52f78842..12a943b0 100644
--- a/gin_integration_test.go
+++ b/gin_integration_test.go
@@ -12,6 +12,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"os"
+	"sync"
 	"testing"
 	"time"
 
@@ -119,6 +120,29 @@ func TestWithHttptestWithAutoSelectedPort(t *testing.T) {
 	testRequest(t, ts.URL+"/example")
 }
 
+func TestConcurrentHandleContext(t *testing.T) {
+	router := New()
+	router.GET("/", func(c *Context) {
+		c.Request.URL.Path = "/example"
+		router.HandleContext(c)
+	})
+	router.GET("/example", func(c *Context) { c.String(http.StatusOK, "it worked") })
+
+	ts := httptest.NewServer(router)
+	defer ts.Close()
+
+	var wg sync.WaitGroup
+	iterations := 200
+	wg.Add(iterations)
+	for i := 0; i < iterations; i++ {
+		go func() {
+			testRequest(t, ts.URL+"/")
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+}
+
 // func TestWithHttptestWithSpecifiedPort(t *testing.T) {
 // 	router := New()
 // 	router.GET("/example", func(c *Context) { c.String(http.StatusOK, "it worked") })
diff --git a/render/render_test.go b/render/render_test.go
index 09ccc658..4c9b180d 100644
--- a/render/render_test.go
+++ b/render/render_test.go
@@ -480,7 +480,7 @@ func TestRenderReader(t *testing.T) {
 
 	assert.NoError(t, err)
 	assert.Equal(t, body, w.Body.String())
-	assert.Equal(t, "image/png", w.HeaderMap.Get("Content-Type"))
-	assert.Equal(t, strconv.Itoa(len(body)), w.HeaderMap.Get("Content-Length"))
-	assert.Equal(t, headers["Content-Disposition"], w.HeaderMap.Get("Content-Disposition"))
+	assert.Equal(t, "image/png", w.Header().Get("Content-Type"))
+	assert.Equal(t, strconv.Itoa(len(body)), w.Header().Get("Content-Length"))
+	assert.Equal(t, headers["Content-Disposition"], w.Header().Get("Content-Disposition"))
 }
diff --git a/routes_test.go b/routes_test.go
index 23e749e2..60f1c81b 100644
--- a/routes_test.go
+++ b/routes_test.go
@@ -267,7 +267,7 @@ func TestRouteStaticFile(t *testing.T) {
 	assert.Equal(t, w, w2)
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Equal(t, "Gin Web Framework", w.Body.String())
-	assert.Equal(t, "text/plain; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
 
 	w3 := performRequest(router, "HEAD", "/using_static/"+filename)
 	w4 := performRequest(router, "HEAD", "/result")
@@ -285,7 +285,7 @@ func TestRouteStaticListingDir(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Contains(t, w.Body.String(), "gin.go")
-	assert.Equal(t, "text/html; charset=utf-8", w.HeaderMap.Get("Content-Type"))
+	assert.Equal(t, "text/html; charset=utf-8", w.Header().Get("Content-Type"))
 }
 
 // TestHandleHeadToDir - ensure the root/sub dir handles properly
@@ -312,10 +312,10 @@ func TestRouterMiddlewareAndStatic(t *testing.T) {
 
 	assert.Equal(t, http.StatusOK, w.Code)
 	assert.Contains(t, w.Body.String(), "package gin")
-	assert.Equal(t, "text/plain; charset=utf-8", w.HeaderMap.Get("Content-Type"))
-	assert.NotEqual(t, w.HeaderMap.Get("Last-Modified"), "Mon, 02 Jan 2006 15:04:05 MST")
-	assert.Equal(t, "Mon, 02 Jan 2006 15:04:05 MST", w.HeaderMap.Get("Expires"))
-	assert.Equal(t, "Gin Framework", w.HeaderMap.Get("x-GIN"))
+	assert.Equal(t, "text/plain; charset=utf-8", w.Header().Get("Content-Type"))
+	assert.NotEqual(t, w.Header().Get("Last-Modified"), "Mon, 02 Jan 2006 15:04:05 MST")
+	assert.Equal(t, "Mon, 02 Jan 2006 15:04:05 MST", w.Header().Get("Expires"))
+	assert.Equal(t, "Gin Framework", w.Header().Get("x-GIN"))
 }
 
 func TestRouteNotAllowedEnabled(t *testing.T) {