diff --git a/paddle/fluid/operators/detail/checkpoint.cc b/paddle/fluid/operators/detail/checkpoint.cc
index 78506a0a72e422f5c6e41bba84a71f8b5e37a6c3..38e46532e6e18b733fa06a91cfb57aa21978f4af 100644
--- a/paddle/fluid/operators/detail/checkpoint.cc
+++ b/paddle/fluid/operators/detail/checkpoint.cc
@@ -22,7 +22,7 @@ namespace framework {
 namespace details {
 Checkpoint::Save(const framework::Scope& scope, const platform::Place& place,
                  const std::string& save_dir, const std::string& var_name,
-                 const bool overwrite) {
+                 const bool& overwrite) {
   auto* var = scope.FindVar(var_name);
   PADDLE_ENFORCE(var != nullptr, "Cannot find variable %s for save_op",
                  var_name);
diff --git a/paddle/fluid/operators/detail/checkpoint.h b/paddle/fluid/operators/detail/checkpoint.h
index 0f0f450ce17bb5ba64c64823abe614599e3867ee..dfa41979734ec36376a50b94d32472c2751e58a2 100644
--- a/paddle/fluid/operators/detail/checkpoint.h
+++ b/paddle/fluid/operators/detail/checkpoint.h
@@ -24,7 +24,7 @@ class Checkpoint {
  public:
   static void Save(const framework::Scope& scope, const platform::Place& place,
                    const std::string& save_dir, const std::string& var_name,
-                   const bool overwrite);
+                   const bool& overwrite);
 
   static void Load();
 }