diff --git a/include/llvm/Analysis/BlockFrequencyInfo.h b/include/llvm/Analysis/BlockFrequencyInfo.h
index 267e43b5d9c..64bd15c9065 100644
--- a/include/llvm/Analysis/BlockFrequencyInfo.h
+++ b/include/llvm/Analysis/BlockFrequencyInfo.h
@@ -1,4 +1,4 @@
-//========-------- BlockFrequencyInfo.h - Block Frequency Analysis -------========//
+//===------- BlockFrequencyInfo.h - Block Frequency Analysis --*- C++ -*---===//
 //
 //                     The LLVM Compiler Infrastructure
 //