diff --git a/mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp b/mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
index 2269a40ec8ef..023c4da7dffd 100644
--- a/mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
+++ b/mlir/lib/Dialect/Vector/Transforms/VectorTransforms.cpp
@@ -2274,7 +2274,7 @@ struct FoldArithToVectorOuterProduct : public OpRewritePattern<MulOpType> {
 
   LogicalResult matchAndRewrite(MulOpType mulOp,
                                 PatternRewriter &rewriter) const override {
-    auto resType = llvm::cast<VectorType>(mulOp.getResult().getType());
+    auto resType = llvm::dyn_cast<VectorType>(mulOp.getResult().getType());
     if (!resType)
       return failure();
     if (resType.getRank() != 2)