diff --git a/lib/LTO/LTOCodeGenerator.cpp b/lib/LTO/LTOCodeGenerator.cpp
index ab4f9681880..5c8f9d31ebc 100644
--- a/lib/LTO/LTOCodeGenerator.cpp
+++ b/lib/LTO/LTOCodeGenerator.cpp
@@ -257,8 +257,7 @@ bool LTOCodeGenerator::compileOptimizedToFile(const char **Name) {
   bool genResult = compileOptimized(&objFile.os());
   objFile.os().close();
   if (objFile.os().has_error()) {
-    Twine ErrMsg = "could not write object file: " + Filename.str();
-    emitError(ErrMsg.str());
+    emitError((Twine("could not write object file: ") + Filename).str());
     objFile.os().clear_error();
     sys::fs::remove(Twine(Filename));
     return false;