diff --git a/llvm/lib/Support/SourceMgr.cpp b/llvm/lib/Support/SourceMgr.cpp
index 3800753..0dc1331 100644
--- a/llvm/lib/Support/SourceMgr.cpp
+++ b/llvm/lib/Support/SourceMgr.cpp
@@ -178,8 +178,7 @@
                              const char *Type, bool ShowLine) const {
   // Report the message with the diagnostic handler if present.
   if (DiagHandler) {
-    DiagHandler(GetMessage(Loc, Msg, Type, ShowLine),
-                DiagContext, DiagLocCookie);
+    DiagHandler(GetMessage(Loc, Msg, Type, ShowLine), DiagContext);
     return;
   }