diff --git a/README.md b/README.md
index 815e70a5..6f9178ca 100644
--- a/README.md
+++ b/README.md
@@ -941,7 +941,7 @@ func main() {
 	route.GET("/:name/:id", func(c *gin.Context) {
 		var person Person
 		if err := c.ShouldBindUri(&person); err != nil {
-			c.JSON(400, gin.H{"msg": err})
+			c.JSON(400, gin.H{"msg": err.Error()})
 			return
 		}
 		c.JSON(200, gin.H{"name": person.Name, "uuid": person.ID})
diff --git a/binding/json.go b/binding/json.go
index d62e0705..45aaa494 100644
--- a/binding/json.go
+++ b/binding/json.go
@@ -6,7 +6,7 @@ package binding
 
 import (
 	"bytes"
-	"fmt"
+	"errors"
 	"io"
 	"net/http"
 
@@ -32,7 +32,7 @@ func (jsonBinding) Name() string {
 
 func (jsonBinding) Bind(req *http.Request, obj interface{}) error {
 	if req == nil || req.Body == nil {
-		return fmt.Errorf("invalid request")
+		return errors.New("invalid request")
 	}
 	return decodeJSON(req.Body, obj)
 }