diff --git a/clang/include/clang/AST/TemplateName.h b/clang/include/clang/AST/TemplateName.h
index d56361b500596..b7732e54ba107 100644
--- a/clang/include/clang/AST/TemplateName.h
+++ b/clang/include/clang/AST/TemplateName.h
@@ -55,7 +55,7 @@ class UncommonTemplateNameStorage {
   };
 
   struct BitsTag {
-    /// A Kind.
+    LLVM_PREFERRED_TYPE(Kind)
     unsigned Kind : 2;
 
     // The template parameter index.