diff --git a/llvm/lib/Support/SourceMgr.cpp b/llvm/lib/Support/SourceMgr.cpp
index 089fcdb..afe901f 100644
--- a/llvm/lib/Support/SourceMgr.cpp
+++ b/llvm/lib/Support/SourceMgr.cpp
@@ -270,7 +270,7 @@
   : SM(&sm), Loc(L), Filename(FN), LineNo(Line), ColumnNo(Col), Kind(Kind),
     Message(Msg), LineContents(LineStr), Ranges(Ranges.vec()),
     FixIts(Hints.begin(), Hints.end()) {
-  std::sort(FixIts.begin(), FixIts.end());
+  llvm::sort(FixIts.begin(), FixIts.end());
 }
 
 static void buildFixItLine(std::string &CaretLine, std::string &FixItLine,