diff --git a/src/backend/optimizer/plan/planagg.c b/src/backend/optimizer/plan/planagg.c
index 9d6c181e365..cefec7bdf10 100644
--- a/src/backend/optimizer/plan/planagg.c
+++ b/src/backend/optimizer/plan/planagg.c
@@ -465,7 +465,7 @@ build_minmax_path(PlannerInfo *root, MinMaxAggInfo *mminfo,
 	 * cheapest path.)
 	 */
 	sorted_path = apply_projection_to_path(subroot, final_rel, sorted_path,
-										   create_pathtarget(root, tlist));
+										   create_pathtarget(subroot, tlist));
 
 	/*
 	 * Determine cost to get just the first row of the presorted path.