diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index b22de78..4904885 100644
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -2112,6 +2112,7 @@ ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
 						if (map != NULL)
 						{
 							tuple = do_convert_tuple(tuple, map);
+							ExecSetSlotDescriptor(slot, tupdesc);
 							ExecStoreTuple(tuple, slot, InvalidBuffer, false);
 						}
 					}
diff --git a/src/test/regress/expected/updatable_views.out b/src/test/regress/expected/updatable_views.out
index caca81a..eab5c03 100644
--- a/src/test/regress/expected/updatable_views.out
+++ b/src/test/regress/expected/updatable_views.out
@@ -2368,8 +2368,8 @@ DETAIL:  Failing row contains (-1, invalid).
 DROP VIEW v1;
 DROP TABLE t1;
 -- check that an auto-updatable view on a partitioned table works correctly
-create table pt (a int, b int) partition by range (a, b);
-create table pt1 (b int not null, a int not null) partition by range (b);
+create table pt (a int, b int, v varchar) partition by range (a, b);
+create table pt1 (b int not null, v varchar, a int not null) partition by range (b);
 create table pt11 (like pt1);
 alter table pt11 drop a;
 alter table pt11 add a int;
@@ -2412,18 +2412,19 @@ select table_name, column_name, is_updatable
 ------------+-------------+--------------
  ptv        | a           | YES
  ptv        | b           | YES
-(2 rows)
+ ptv        | v           | YES
+(3 rows)
 
 insert into ptv values (1, 2);
 select tableoid::regclass, * from pt;
- tableoid | a | b 
-----------+---+---
- pt11     | 1 | 2
+ tableoid | a | b | v 
+----------+---+---+---
+ pt11     | 1 | 2 | 
 (1 row)
 
 create view ptv_wco as select * from pt where a = 0 with check option;
 insert into ptv_wco values (1, 2);
 ERROR:  new row violates check option for view "ptv_wco"
-DETAIL:  Failing row contains (1, 2).
+DETAIL:  Failing row contains (1, 2, null).
 drop view ptv, ptv_wco;
 drop table pt, pt1, pt11;
diff --git a/src/test/regress/sql/updatable_views.sql b/src/test/regress/sql/updatable_views.sql
index 6a9958d..2ede44c 100644
--- a/src/test/regress/sql/updatable_views.sql
+++ b/src/test/regress/sql/updatable_views.sql
@@ -1114,8 +1114,8 @@ DROP VIEW v1;
 DROP TABLE t1;
 
 -- check that an auto-updatable view on a partitioned table works correctly
-create table pt (a int, b int) partition by range (a, b);
-create table pt1 (b int not null, a int not null) partition by range (b);
+create table pt (a int, b int, v varchar) partition by range (a, b);
+create table pt1 (b int not null, v varchar, a int not null) partition by range (b);
 create table pt11 (like pt1);
 alter table pt11 drop a;
 alter table pt11 add a int;