diff --git a/native-sql-engine/cpp/src/codegen/arrow_compute/ext/actions_impl.cc b/native-sql-engine/cpp/src/codegen/arrow_compute/ext/actions_impl.cc
index cb7f24312..67d87e8e3 100644
--- a/native-sql-engine/cpp/src/codegen/arrow_compute/ext/actions_impl.cc
+++ b/native-sql-engine/cpp/src/codegen/arrow_compute/ext/actions_impl.cc
@@ -496,7 +496,10 @@ class CountDistinctAction : public ActionBase {
       return arrow::Status::OK();
     };
 
-    *on_null = [this]() { row_id++; return arrow::Status::OK(); };
+    *on_null = [this]() {
+      row_id++;
+      return arrow::Status::OK();
+    };
     return arrow::Status::OK();
   }