diff --git a/oneflow/core/functional/impl/common.cpp b/oneflow/core/functional/impl/common.cpp
index 24b123aee87..06c74ce727a 100644
--- a/oneflow/core/functional/impl/common.cpp
+++ b/oneflow/core/functional/impl/common.cpp
@@ -204,7 +204,7 @@ Maybe<void> CheckInplaceShapeCanExpandTo(const Shape& shape, const Shape& expand
   return Maybe<void>::Ok();
 }
 
-Maybe<void> CheckSizeNonNegative(const Shape& shape) {
+inline Maybe<void> CheckSizeNonNegative(const Shape& shape) {
   for (const auto& s : shape) {
     CHECK_OR_THROW(s >= 0)
         << "Trying to create tensor with negative dimension " << s << ": "