diff --git a/clang/lib/Basic/Version.cpp b/clang/lib/Basic/Version.cpp
--- a/clang/lib/Basic/Version.cpp
+++ b/clang/lib/Basic/Version.cpp
@@ -127,11 +127,6 @@
   OS << ToolName << " version " CLANG_VERSION_STRING " "
      << getClangFullRepositoryVersion();
 
-  // If vendor supplied, include the base LLVM version as well.
-#ifdef CLANG_VENDOR
-  OS << " (based on " << BACKEND_PACKAGE_STRING << ")";
-#endif
-
   return OS.str();
 }