diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c
index 71678d08dc..4b0322530b 100644
--- a/src/backend/optimizer/plan/createplan.c
+++ b/src/backend/optimizer/plan/createplan.c
@@ -761,6 +761,9 @@ use_physical_tlist(PlannerInfo *root, Path *path, int flags)
 	if (rel->reloptkind != RELOPT_BASEREL)
 		return false;
 
+	if (IsA(path, CustomPath) && ((CustomPath *) path)->forbid_physical_tlist)
+		return false;
+
 	/*
 	 * Can't do it if any system columns or whole-row Vars are requested.
 	 * (This could possibly be fixed but would take some fragile assumptions
diff --git a/src/include/nodes/relation.h b/src/include/nodes/relation.h
index 48862d93ae..5a1f6cee47 100644
--- a/src/include/nodes/relation.h
+++ b/src/include/nodes/relation.h
@@ -1089,6 +1089,7 @@ typedef struct CustomPath
 								 * nodes/extensible.h */
 	List	   *custom_paths;	/* list of child Path nodes, if any */
 	List	   *custom_private;
+	bool		forbid_physical_tlist;
 	const struct CustomPathMethods *methods;
 } CustomPath;