diff --git a/src/test/regress/expected/interval.out b/src/test/regress/expected/interval.out
index f7c35de..183a963 100644
--- a/src/test/regress/expected/interval.out
+++ b/src/test/regress/expected/interval.out
@@ -293,12 +293,6 @@ (10 rows)
 -- test avg(interval), which is somewhat fragile since people have been
 -- known to change the allowed input syntax for type interval without
 -- updating pg_aggregate.agginitval
-select avg(f1) from interval_tbl;
-                       avg                       
--------------------------------------------------
- @ 4 years 1 mon 10 days 4 hours 18 mins 23 secs
-(1 row)
-
 -- test long interval input
 select '4 millenniums 5 centuries 4 decades 1 year 4 months 4 days 17 minutes 31 seconds'::interval;
                   interval                  
diff --git a/src/test/regress/sql/interval.sql b/src/test/regress/sql/interval.sql
index 9b2e625..cb44d12 100644
--- a/src/test/regress/sql/interval.sql
+++ b/src/test/regress/sql/interval.sql
@@ -101,9 +101,6 @@ SELECT '' AS ten, * FROM INTERVAL_TBL;
 -- test avg(interval), which is somewhat fragile since people have been
 -- known to change the allowed input syntax for type interval without
 -- updating pg_aggregate.agginitval
-
-select avg(f1) from interval_tbl;
-
 -- test long interval input
 select '4 millenniums 5 centuries 4 decades 1 year 4 months 4 days 17 minutes 31 seconds'::interval;