diff --git a/config_center/zookeeper/impl.go b/config_center/zookeeper/impl.go
index 00982a97cadeeeb62f6ed8393cd922f240241d9d..61c969dd139ba3d1d5e8ebcd8a27a04e5009d500 100644
--- a/config_center/zookeeper/impl.go
+++ b/config_center/zookeeper/impl.go
@@ -18,7 +18,6 @@
 package zookeeper
 
 import (
-	"github.com/samuel/go-zookeeper/zk"
 	"strings"
 	"sync"
 	"time"
@@ -33,6 +32,7 @@ import (
 	"github.com/apache/dubbo-go/config_center"
 	"github.com/apache/dubbo-go/remoting"
 	"github.com/apache/dubbo-go/remoting/zookeeper"
+	"github.com/samuel/go-zookeeper/zk"
 )
 
 const ZkClient = "zk config_center"
diff --git a/protocol/jsonrpc/http.go b/protocol/jsonrpc/http.go
index 5afe619b5dfbaa6b6caa6deafe4eedcfc52efa5e..46e2da06b77c070cf15ff6ee6b4781c453022747 100644
--- a/protocol/jsonrpc/http.go
+++ b/protocol/jsonrpc/http.go
@@ -110,7 +110,7 @@ func (c *HTTPClient) NewRequest(service common.URL, method string, args interfac
 func (c *HTTPClient) Call(ctx context.Context, service common.URL, req *Request, rsp interface{}) error {
 	// header
 	httpHeader := http.Header{}
-	httpHeader.Set("Content-Protocol", "application/json")
+	httpHeader.Set("Content-Type", "application/json")
 	httpHeader.Set("Accept", "application/json")
 
 	reqTimeout := c.options.HTTPTimeout