diff --git a/matview.c b/matview.c
index e778b1f..9212c8f 100644
--- a/matview.c
+++ b/matview.c
@@ -2063,7 +2063,7 @@ apply_delta(Oid matviewOid, Tuplestorestate *old_tuplestores, Tuplestorestate *n
 		/* apply new delta */
 		if (use_count)
 			apply_new_delta_with_count(matviewname, NEW_DELTA_ENRNAME,
-								keys, aggs_set_new, &target_list_buf, count_colname,
+								keys, &target_list_buf, aggs_set_new, count_colname,
 								query->distinctClause != NULL);
 		else
 			apply_new_delta(matviewname, NEW_DELTA_ENRNAME, &target_list_buf);
@@ -2547,7 +2547,7 @@ apply_old_delta(const char *matviewname, const char *deltaname_old,
  */
 static void
 apply_new_delta_with_count(const char *matviewname, const char* deltaname_new,
-				List *keys, StringInfo aggs_set, StringInfo target_list,
+				List *keys, StringInfo target_list, StringInfo aggs_set,
 				const char* count_colname, bool distinct)
 {
 	StringInfoData	querybuf;