diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index a7655e4..5b3eb18 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -1091,7 +1091,7 @@ make_outerjoininfo(PlannerInfo *root,
 	compute_semijoin_info(sjinfo, clause);
 
 	/* If it's a full join, no need to be very smart */
-	if (jointype == JOIN_FULL)
+	if (jointype == JOIN_FULL || jointype == JOIN_ANTI)
 	{
 		sjinfo->min_lefthand = bms_copy(left_rels);
 		sjinfo->min_righthand = bms_copy(right_rels);