diff --git a/clang/lib/Frontend/TextDiagnostic.cpp b/clang/lib/Frontend/TextDiagnostic.cpp
index 0f7fb50..719e77e 100644
--- a/clang/lib/Frontend/TextDiagnostic.cpp
+++ b/clang/lib/Frontend/TextDiagnostic.cpp
@@ -837,7 +837,7 @@
     if (LangOpts.MSCompatibilityVersion &&
         !LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2015))
       OS << ' ';
-    OS << ": ";
+    OS << ':';
     break;
   }