diff --git a/servlet/webapp-servlet.go b/servlet/webapp-servlet.go
index 6c37d71..686fb5a 100644
--- a/servlet/webapp-servlet.go
+++ b/servlet/webapp-servlet.go
@@ -104,7 +104,7 @@ func (s *WebappServlets) Handshake(servletCtx server.ServletCtx, ctx *fasthttp.R
 	})
 
 	if nil != err {
-		return nil, nil
+		return nil, err
 	}
 
 	var claims jwt.MapClaims