diff --git a/paddle/fluid/operators/distributed/grpc_client.cc b/paddle/fluid/operators/distributed/grpc_client.cc
index d8dc667fe742b53ce6758a33120bb6d6b6e2dd8e..5d2e3688797d9328b2d4b797b7a628b1f76f4547 100644
--- a/paddle/fluid/operators/distributed/grpc_client.cc
+++ b/paddle/fluid/operators/distributed/grpc_client.cc
@@ -37,7 +37,7 @@ void GRPCClient::InitEventLoop() {
 
 void GRPCClient::SendBeginPass() {
   for (auto& it : channels_) {
-    VLOG(3) << "send begin pass to: " it.first;
+    VLOG(3) << "send begin pass to: " << it.first;
     this->AsyncSendBeginPass(it.first);
   }
 }