diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c
index 9a8c5165b0..313f379ed8 100644
--- a/src/backend/optimizer/path/joinpath.c
+++ b/src/backend/optimizer/path/joinpath.c
@@ -610,7 +610,7 @@ get_memoize_path(PlannerInfo *root, RelOptInfo *innerrel,
 											hash_operators,
 											extra->inner_unique,
 											binary_mode,
-											outer_path->parent->rows);
+											outer_path->rows);
 	}
 
 	return NULL;
diff --git a/src/test/regress/expected/join.out b/src/test/regress/expected/join.out
index bf1a2db2cf..bd3375f2ba 100644
--- a/src/test/regress/expected/join.out
+++ b/src/test/regress/expected/join.out
@@ -3673,8 +3673,8 @@ select * from tenk1 t1 left join
   (tenk1 t2 join tenk1 t3 on t2.thousand = t3.unique2)
   on t1.hundred = t2.hundred and t1.ten = t3.ten
 where t1.unique1 = 1;
-                          QUERY PLAN                          
---------------------------------------------------------------
+                       QUERY PLAN                       
+--------------------------------------------------------
  Nested Loop Left Join
    ->  Index Scan using tenk1_unique1 on tenk1 t1
          Index Cond: (unique1 = 1)
@@ -3684,20 +3684,17 @@ where t1.unique1 = 1;
                Recheck Cond: (t1.hundred = hundred)
                ->  Bitmap Index Scan on tenk1_hundred
                      Index Cond: (hundred = t1.hundred)
-         ->  Memoize
-               Cache Key: t2.thousand
-               Cache Mode: logical
-               ->  Index Scan using tenk1_unique2 on tenk1 t3
-                     Index Cond: (unique2 = t2.thousand)
-(14 rows)
+         ->  Index Scan using tenk1_unique2 on tenk1 t3
+               Index Cond: (unique2 = t2.thousand)
+(11 rows)
 
 explain (costs off)
 select * from tenk1 t1 left join
   (tenk1 t2 join tenk1 t3 on t2.thousand = t3.unique2)
   on t1.hundred = t2.hundred and t1.ten + t2.ten = t3.ten
 where t1.unique1 = 1;
-                          QUERY PLAN                          
---------------------------------------------------------------
+                       QUERY PLAN                       
+--------------------------------------------------------
  Nested Loop Left Join
    ->  Index Scan using tenk1_unique1 on tenk1 t1
          Index Cond: (unique1 = 1)
@@ -3707,12 +3704,9 @@ where t1.unique1 = 1;
                Recheck Cond: (t1.hundred = hundred)
                ->  Bitmap Index Scan on tenk1_hundred
                      Index Cond: (hundred = t1.hundred)
-         ->  Memoize
-               Cache Key: t2.thousand
-               Cache Mode: logical
-               ->  Index Scan using tenk1_unique2 on tenk1 t3
-                     Index Cond: (unique2 = t2.thousand)
-(14 rows)
+         ->  Index Scan using tenk1_unique2 on tenk1 t3
+               Index Cond: (unique2 = t2.thousand)
+(11 rows)
 
 explain (costs off)
 select count(*) from