diff --git a/mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h b/mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h
--- a/mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h
+++ b/mlir/include/mlir/Dialect/Linalg/Transforms/Transforms.h
@@ -568,10 +568,11 @@
 /// Subsequently, they are contracted together and the result is written to
 /// the first entry of the output buffer.
 template <typename ConvOp, int N>
-struct ConvOpVectorization : public OpRewritePattern<ConvOp> {
+class ConvOpVectorization : public OpRewritePattern<ConvOp> {
   using OpRewritePattern<ConvOp>::OpRewritePattern;
   SmallVector<bool, 4> mask;
 
+public:
   ConvOpVectorization(MLIRContext *context, SmallVector<bool, 4> msk)
       : OpRewritePattern<ConvOp>(context) {
     assert(msk.size() == N && "Mask size does not match rank");
diff --git a/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp b/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp
--- a/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp
+++ b/mlir/lib/Dialect/Linalg/Transforms/Vectorization.cpp
@@ -371,7 +371,7 @@
 template <class ConvOp, int N>
 LogicalResult ConvOpVectorization<ConvOp, N>::matchAndRewrite(
     ConvOp op, PatternRewriter &rewriter) const {
-  const unsigned dimSize = 3;
+  unsigned dimSize = 3;
   Location loc = op.getLoc();
   MLIRContext *context = op.getContext();
   edsc::ScopedContext scope(rewriter, loc);