diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index ccb0cbd5043..f2365c67611 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -383,7 +383,7 @@ static int AssembleInput(const char *ProgName) {
   // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and
   // MCObjectFileInfo needs a MCContext reference in order to initialize itself.
   OwningPtr<MCObjectFileInfo> MOFI(new MCObjectFileInfo());
-  MCContext Ctx(*MAI, *MRI, MOFI.get());
+  MCContext Ctx(*MAI, *MRI, MOFI.get(), &SrcMgr);
   MOFI->InitMCObjectFileInfo(TripleName, RelocModel, CMModel, Ctx);
 
   if (SaveTempLabels)