diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 0d397b71d87..7588c9fe8d1 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6631,7 +6631,7 @@ SDValue DAGCombiner::visitMGATHER(SDNode *N) {
   if (Level >= AfterLegalizeTypes)
     return SDValue();
 
-  MaskedGatherSDNode *MGT = dyn_cast<MaskedGatherSDNode>(N);
+  MaskedGatherSDNode *MGT = cast<MaskedGatherSDNode>(N);
   SDValue Mask = MGT->getMask();
   SDLoc DL(N);