diff --git a/llvm/lib/Target/ARC/ARCISelLowering.cpp b/llvm/lib/Target/ARC/ARCISelLowering.cpp
index 6b921ca..5991838 100644
--- a/llvm/lib/Target/ARC/ARCISelLowering.cpp
+++ b/llvm/lib/Target/ARC/ARCISelLowering.cpp
@@ -487,7 +487,7 @@
       switch (RegVT.getSimpleVT().SimpleTy) {
       default: {
         DEBUG(errs() << "LowerFormalArguments Unhandled argument type: "
-                     << RegVT.getSimpleVT().SimpleTy << "\n");
+                     << (unsigned)RegVT.getSimpleVT().SimpleTy << "\n");
         llvm_unreachable("Unhandled LowerFormalArguments type.");
       }
       case MVT::i32: