diff --git a/src/cswinrt/strings/ComInteropHelpers.cs b/src/cswinrt/strings/ComInteropHelpers.cs
index 4d314d7d2..7296ba69d 100644
--- a/src/cswinrt/strings/ComInteropHelpers.cs
+++ b/src/cswinrt/strings/ComInteropHelpers.cs
@@ -512,4 +512,5 @@ public static void ShowShareUIForWindow(IntPtr appWindow)
             dataTransferManagerInterop.ShowShareUIForWindow(appWindow);
         }
     }
+#endif
 }