diff --git a/pkg/proxy/http.go b/pkg/proxy/http.go
index a554480dc0..87318cecca 100644
--- a/pkg/proxy/http.go
+++ b/pkg/proxy/http.go
@@ -3,7 +3,6 @@ package proxy
 import (
 	"context"
 	"crypto/tls"
-	"fmt"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
@@ -44,7 +43,7 @@ func (p *SReverseProxy) ServeHTTP(ctx context.Context, w http.ResponseWriter, r
 	}
 	remoteUrl, err := url.Parse(endpoint)
 	if err != nil {
-		httperrors.InternalServerError(w, fmt.Sprintf("Parse remote url %q: %v", endpoint, err))
+		httperrors.InternalServerError(w, "failed parsing url %q: %v", endpoint, err)
 		return
 	}
 	log.Debugf("Forwarding to servie: %q, url: %q", p.serviceName, remoteUrl.String())
diff --git a/pkg/webconsole/server/server.go b/pkg/webconsole/server/server.go
index ddb94f41a4..5b0dd2fc0a 100644
--- a/pkg/webconsole/server/server.go
+++ b/pkg/webconsole/server/server.go
@@ -1,7 +1,6 @@
 package server
 
 import (
-	"fmt"
 	"net/http"
 
 	"yunion.io/x/jsonutils"
@@ -28,13 +27,12 @@ func (s *ConnectionServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	log.Debugf("[connection] Get query: %v", query)
 	accessToken, _ := query.GetString("access_token")
 	if accessToken == "" {
-		httperrors.BadRequestError(w, fmt.Sprintf("Empty access_token"))
+		httperrors.BadRequestError(w, "Empty access_token")
 		return
 	}
 	sessionObj, ok := session.Manager.Get(accessToken)
 	if !ok {
-		log.Warningf("Not found session by token: %q", accessToken)
-		httperrors.NotFoundError(w, fmt.Sprintf("Not found session"))
+		httperrors.NotFoundError(w, "session not found")
 		return
 	}
 	var srv http.Handler
@@ -45,7 +43,7 @@ func (s *ConnectionServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 		srv, err = NewTTYServer(sessionObj)
 	}
 	if err != nil {
-		httperrors.GeneralServerError(w, fmt.Errorf("New server error: %v", err))
+		httperrors.GeneralServerError(w, "New server error: %v", err)
 		return
 	}
 	srv.ServeHTTP(w, req)