diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index c1110368250..9516dff6cb8 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -4139,7 +4139,7 @@ SDOperand SelectionDAGLegalize::ExpandEXTRACT_VECTOR_ELT(SDOperand Op) {
         MVT::getSizeInBits(TLI.getPointerTy()))
       Idx = DAG.getNode(ISD::TRUNCATE, TLI.getPointerTy(), StackPtr);
     else
-      Idx = DAG.getNode(ISD::SIGN_EXTEND, TLI.getPointerTy(), StackPtr);
+      Idx = DAG.getNode(ISD::ZERO_EXTEND, TLI.getPointerTy(), StackPtr);
 
     StackPtr = DAG.getNode(ISD::ADD, Idx.getValueType(), Idx, StackPtr);