diff --git a/paddle/fluid/operators/smooth_l1_loss_op.cc b/paddle/fluid/operators/smooth_l1_loss_op.cc
index 5af47b0f6d0a80c603f59341fd4a4f84d08c0901..f4c284013ce21529715d5919db99405f5ebf1a3f 100644
--- a/paddle/fluid/operators/smooth_l1_loss_op.cc
+++ b/paddle/fluid/operators/smooth_l1_loss_op.cc
@@ -14,8 +14,6 @@ limitations under the License. */
 
 #include "paddle/fluid/operators/smooth_l1_loss_op.h"
 
-#include <memory>
-
 namespace paddle {
 namespace operators {