diff --git a/llvm/include/llvm/Support/Unique.h b/llvm/include/llvm/Support/Unique.h
index f555ce196e01..221955369379 100644
--- a/llvm/include/llvm/Support/Unique.h
+++ b/llvm/include/llvm/Support/Unique.h
@@ -1,4 +1,4 @@
-//***************************************************************************
+//************************************************************-*- C++ -*-
 // class Unique:
 //	Mixin class for classes that should never be copied.
 //