diff --git a/oneflow/core/operator/broadcast_binary_op.cpp b/oneflow/core/operator/broadcast_binary_op.cpp
index 3f2517e67e284fc2ae0236896ae7cd738ae75e92..f8fe248315ddc3a1be4b95bf28bcf4c5be786d4d 100644
--- a/oneflow/core/operator/broadcast_binary_op.cpp
+++ b/oneflow/core/operator/broadcast_binary_op.cpp
@@ -15,7 +15,7 @@ bool IsScalarBlob(const BlobDesc* blob) {
 void BroadcastBinaryOp::InitFromOpConf() {
   EnrollInputBn("a");
   EnrollInputBn("b");
-  EnrollOutputBn("out")->set_mutable_inplace_ibn("a");
+  EnrollOutputBn("out");
 }
 
 Maybe<void> BroadcastBinaryOp::InferBlobDescs(