diff --git a/clang/lib/Rewrite/HTMLRewrite.cpp b/clang/lib/Rewrite/HTMLRewrite.cpp
index 819dc201671c..7f408c74f4c8 100644
--- a/clang/lib/Rewrite/HTMLRewrite.cpp
+++ b/clang/lib/Rewrite/HTMLRewrite.cpp
@@ -146,6 +146,7 @@ void html::AddHeaderFooterInternalBuiltinCSS(Rewriter& R, unsigned FileID) {
<< " .line { white-space: pre }\n"
<< " .msg { background-color:#fcff4c }\n"
<< " .msg { font-family:Helvetica, sans-serif; font-size: smaller }\n"
+ << " .msg { font-weight: bold }\n"
<< " .msg { float:left }\n"
<< " .msg { padding:5px; margin-top:10px; margin-bottom:10px }\n"
<< "\n\n";