diff --git a/lib/Support/Windows/PathV2.inc b/lib/Support/Windows/PathV2.inc
index 696768ba9dd..3dfac66b77c 100644
--- a/lib/Support/Windows/PathV2.inc
+++ b/lib/Support/Windows/PathV2.inc
@@ -794,7 +794,7 @@ mapped_file_region::mapped_file_region(const Twine &path,
   SmallVector<wchar_t, 128> path_utf16;
 
   // Convert path to UTF-16.
-  if (ec = UTF8ToUTF16(path.toStringRef(path_storage), path_utf16))
+  if ((ec = UTF8ToUTF16(path.toStringRef(path_storage), path_utf16)))
     return;
 
   // Get file handle for creating a file mapping.