diff --git a/mlir/include/mlir/Analysis/DataFlow/SparseAnalysis.h b/mlir/include/mlir/Analysis/DataFlow/SparseAnalysis.h
index 387b9ee707179bf..8c67c9dd75de598 100644
--- a/mlir/include/mlir/Analysis/DataFlow/SparseAnalysis.h
+++ b/mlir/include/mlir/Analysis/DataFlow/SparseAnalysis.h
@@ -255,7 +255,7 @@ class AbstractSparseForwardDataFlowAnalysis : public DataFlowAnalysis {
   /// operation `branch`, which can either be the entry block of one of the
   /// regions or the parent operation itself, and set either the argument or
   /// parent result lattices.
-  void visitRegionSuccessors(ProgramPoint *point,
+  virtual void visitRegionSuccessors(ProgramPoint *point,
                              RegionBranchOpInterface branch,
                              RegionBranchPoint successor,
                              ArrayRef<AbstractSparseLattice *> lattices);