diff --git a/onnxruntime/core/providers/dnnl/subgraph/dnnl_subgraph_primitive.h b/onnxruntime/core/providers/dnnl/subgraph/dnnl_subgraph_primitive.h
index a94b2fe8e1..39430f6bc9 100644
--- a/onnxruntime/core/providers/dnnl/subgraph/dnnl_subgraph_primitive.h
+++ b/onnxruntime/core/providers/dnnl/subgraph/dnnl_subgraph_primitive.h
@@ -132,9 +132,5 @@ inline std::ostream& operator<<(std::ostream& os, const gsl::span<int64_t>& span
   return os;
 }
 
-inline std::ostream& operator<<(std::ostream& os, const TensorShape& shape) {
-  return os << shape.GetDims();
-}
-
 }  // namespace onnxruntime