diff --git a/modules/context/context.go b/modules/context/context.go
index d02339d5b..adae562c0 100644
--- a/modules/context/context.go
+++ b/modules/context/context.go
@@ -356,8 +356,8 @@ func (ctx *Context) Error(status int, contents ...string) {
 
 // JSON render content as JSON
 func (ctx *Context) JSON(status int, content interface{}) {
-	ctx.Resp.WriteHeader(status)
 	ctx.Resp.Header().Set("Content-Type", "application/json;charset=utf8")
+	ctx.Resp.WriteHeader(status)
 	if err := json.NewEncoder(ctx.Resp).Encode(content); err != nil {
 		ctx.ServerError("Render JSON failed", err)
 	}