diff --git a/mlir/lib/Dialect/Vector/VectorTransforms.cpp b/mlir/lib/Dialect/Vector/VectorTransforms.cpp
index 912031035ed7..6528789810bf 100644
--- a/mlir/lib/Dialect/Vector/VectorTransforms.cpp
+++ b/mlir/lib/Dialect/Vector/VectorTransforms.cpp
@@ -3579,7 +3579,7 @@ class DropInnerMostUnitDims : public OpRewritePattern<vector::TransferReadOp> {
 
   LogicalResult matchAndRewrite(vector::TransferReadOp readOp,
                                 PatternRewriter &rewriter) const override {
-    auto srcType = readOp.source().getType().cast<MemRefType>();
+    auto srcType = readOp.source().getType().dyn_cast<MemRefType>();
     if (!srcType || !srcType.hasStaticShape())
       return failure();