diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorConversion.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorConversion.cpp
index bb92029ff1e92..e44d8565fc867 100644
--- a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorConversion.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorConversion.cpp
@@ -200,8 +200,7 @@ class NewCallParams final {
   /// MLIR buffers as needed, and returning `this` for method chaining.
   NewCallParams &genBuffers(SparseTensorType stt,
                             ArrayRef<Value> dimSizesValues) {
-    const Dimension dimRank = stt.getDimRank();
-    assert(dimSizesValues.size() == static_cast<size_t>(dimRank));
+    assert(dimSizesValues.size() == static_cast<size_t>(stt.getDimRank()));
     // Sparsity annotations.
     params[kParamLvlTypes] = genLvlTypesBuffer(builder, loc, stt);
     // Construct dimSizes, lvlSizes, dim2lvl, and lvl2dim buffers.