diff --git a/lib/Target/CellSPU/SPUISelLowering.cpp b/lib/Target/CellSPU/SPUISelLowering.cpp
index 4819d72d9b4..d1cf50c67ba 100644
--- a/lib/Target/CellSPU/SPUISelLowering.cpp
+++ b/lib/Target/CellSPU/SPUISelLowering.cpp
@@ -1215,7 +1215,7 @@ SPUTargetLowering::LowerFormalArguments(SDValue Chain,
       FuncInfo->setVarArgsFrameIndex(
         MFI->CreateFixedObject(StackSlotSize, ArgOffset, true));
       SDValue FIN = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(), PtrVT);
-      unsigned VReg = MF.addLiveIn(ArgRegs[ArgRegIdx], &SPU::R32CRegClass);
+      unsigned VReg = MF.addLiveIn(ArgRegs[ArgRegIdx], &SPU::VECREGRegClass);
       SDValue ArgVal = DAG.getRegister(VReg, MVT::v16i8);
       SDValue Store = DAG.getStore(Chain, dl, ArgVal, FIN, MachinePointerInfo(),
                                    false, false, 0);