diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 2b47e95..bace60d 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -9708,12 +9708,17 @@ generate_function_name(Oid funcid, int nargs, List *argnames, Oid *argtypes,
 	 * find it.
 	 */
 	if (!force_qualify)
+	{
 		p_result = func_get_detail(list_make1(makeString(proname)),
 								   NIL, argnames, nargs, argtypes,
 								   !use_variadic, true,
 								   &p_funcid, &p_rettype,
 								   &p_retset, &p_nvargs, &p_vatype,
 								   &p_true_typeids, NULL);
+
+		if (funcid != p_funcid)
+			elog(ERROR, "!!!! %s() %u != %u", proname, funcid, p_funcid);
+	}
 	else
 	{
 		p_result = FUNCDETAIL_NOTFOUND;