diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 10a534f..cbc7352 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -772,7 +772,7 @@
       LegalIntReg = IntReg;
     } else {
       RegisterTypeForVT[IntReg] = TransformToType[IntReg] =
-        (MVT::SimpleValueType)LegalIntReg;
+        (const MVT::SimpleValueType)LegalIntReg;
       ValueTypeActions.setTypeAction(IVT, TypePromoteInteger);
     }
   }