diff --git a/cpp/src/groupby/sort/group_single_pass_reduction_util.cuh b/cpp/src/groupby/sort/group_single_pass_reduction_util.cuh
index fe24f022a5e..c41fab144a8 100644
--- a/cpp/src/groupby/sort/group_single_pass_reduction_util.cuh
+++ b/cpp/src/groupby/sort/group_single_pass_reduction_util.cuh
@@ -217,8 +217,8 @@ struct group_reduction_functor<K, T, std::enable_if_t<is_group_reduction_support
                    validity.begin(),
                    thrust::logical_or<bool>{});
 
-      auto [null_mask, null_count] = cudf::detail::valid_if(
-        validity.begin(), validity.end(), thrust::identity{}, stream, mr);
+      auto [null_mask, null_count] =
+        cudf::detail::valid_if(validity.begin(), validity.end(), thrust::identity{}, stream, mr);
       result->set_null_mask(std::move(null_mask), null_count);
     }
     return result;