diff --git a/onnxruntime/core/providers/dml/OperatorAuthorHelper/Common.h b/onnxruntime/core/providers/dml/OperatorAuthorHelper/Common.h
index 34f60e1f6f..c85c1d7e52 100644
--- a/onnxruntime/core/providers/dml/OperatorAuthorHelper/Common.h
+++ b/onnxruntime/core/providers/dml/OperatorAuthorHelper/Common.h
@@ -20,13 +20,12 @@
     }\
   }
 
-template<typename T, typename I> T clamp_cast(I input)
-{
-    return static_cast<T>(std::clamp<I>(input, std::numeric_limits<T>::lowest(), std::numeric_limits<T>::max()));
-}
-
 namespace OperatorHelper
 {
+    template<typename T, typename I> T clamp_cast(I input)
+    {
+      return static_cast<T>(std::clamp<I>(input, std::numeric_limits<T>::lowest(), std::numeric_limits<T>::max()));
+    }
     enum TensorAxis { N, C, H, W, DoNotCoerce = UINT_MAX, LeftAligned = INT_MAX, RightAligned = INT_MIN, NoPlacementAdjustment = 0 };
     enum BroadcastMode { NoBroadcast, UnidirectionalBroadcast, MultidirectionalBroadcast };