diff --git a/contrib/lo/expected/lo.out b/contrib/lo/expected/lo.out
index c63e4b1c704..65798205a5a 100644
--- a/contrib/lo/expected/lo.out
+++ b/contrib/lo/expected/lo.out
@@ -47,4 +47,10 @@ SELECT lo_get(43214);
 DELETE FROM image;
 SELECT lo_get(43214);
 ERROR:  large object 43214 does not exist
+SELECT lo_oid(1::lo);
+ lo_oid 
+--------
+      1
+(1 row)
+
 DROP TABLE image;
diff --git a/contrib/lo/sql/lo.sql b/contrib/lo/sql/lo.sql
index 77039509245..ca36cdb3098 100644
--- a/contrib/lo/sql/lo.sql
+++ b/contrib/lo/sql/lo.sql
@@ -27,4 +27,6 @@ DELETE FROM image;
 
 SELECT lo_get(43214);
 
+SELECT lo_oid(1::lo);
+
 DROP TABLE image;