diff --git a/paddle/fluid/operators/checkpoint_notify_op.cc b/paddle/fluid/operators/checkpoint_notify_op.cc
index 7b4c607c33e349ffdd03af4a461044ab8cb858df..31b725ec184ced83109f7d47851e9e962c555e02 100644
--- a/paddle/fluid/operators/checkpoint_notify_op.cc
+++ b/paddle/fluid/operators/checkpoint_notify_op.cc
@@ -56,7 +56,7 @@ class CheckpointNotifyOpMaker : public framework::OpProtoAndCheckerMaker {
   void Make() {
     AddAttr<std::vector<std::string>>(
         "epmap",
-        "(string vector, default 127.0.0.1:6164)"
+        "(string vector, default  127.0.0.1:6164)"
         "Server endpoints in the order of input variables for mapping")
         .SetDefault({"127.0.0.1:6164"});
     AddAttr<std::string>(