diff --git a/context.go b/context.go
index a80499c8..af741e0e 100644
--- a/context.go
+++ b/context.go
@@ -6,6 +6,7 @@ package gin
 
 import (
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"math"