diff --git a/paddle/fluid/operators/distributed/rpc_server.cc b/paddle/fluid/operators/distributed/rpc_server.cc
index 397976fe9904824d775a339b3d2887dce72061da..c3a46e348c69a20953f013c7de772a37db5f4844 100644
--- a/paddle/fluid/operators/distributed/rpc_server.cc
+++ b/paddle/fluid/operators/distributed/rpc_server.cc
@@ -111,8 +111,8 @@ void RPCServer::RegisterRPC(const std::string& rpc_name,
 
   static int cond = -1;
   rpc_cond_map_[rpc_name] = ++cond;
-  VLOG(3) << "RegisterRPC rpc_name:" << rpc_name << ", handler:" << handler
-          << ", cond:" << rpc_cond_map_[rpc_name];
+  VLOG(3) << "RegisterRPC rpc_name: " << rpc_name << ", handler: " << handler
+          << ", cond: " << rpc_cond_map_[rpc_name];
 }
 
 void RPCServer::SetCond(const std::string& rpc_name) {