diff --git a/tools/mm/page_owner_sort.c b/tools/mm/page_owner_sort.c
index 22b3b500d33a..f1dc0763c25c 100644
--- a/tools/mm/page_owner_sort.c
+++ b/tools/mm/page_owner_sort.c
@@ -821,6 +821,9 @@ int main(int argc, char **argv)
 		set_single_cmp(compare_stacktrace, SORT_ASC);
 		break;
 	case COMP_NO_FLAG:
+		if (sc.size > 0)
+			break;
+		/* fallthrough */
 	case COMP_NUM:
 		set_single_cmp(compare_num, SORT_DESC);
 		break;