diff --git a/lib/Target/SubstraitPB/Export.cpp b/lib/Target/SubstraitPB/Export.cpp
index fd398bd1dd78..e5800de7e6aa 100644
--- a/lib/Target/SubstraitPB/Export.cpp
+++ b/lib/Target/SubstraitPB/Export.cpp
@@ -181,8 +181,8 @@ FailureOr<std::unique_ptr<Rel>> exportOperation(EmitOp op) {
 
 FailureOr<std::unique_ptr<Expression>>
 exportOperation(ExpressionOpInterface op) {
-  return llvm::TypeSwitch<Operation *, FailureOr<std::unique_ptr<Expression>>>(
-             op)
+  return llvm::TypeSwitch<ExpressionOpInterface,
+                          FailureOr<std::unique_ptr<Expression>>>(op)
       .Case<FieldReferenceOp, LiteralOp>([&](auto op) {
         llvm::errs() << __PRETTY_FUNCTION__ << "\n";
         op.dump();