diff --git a/contrib/btree_gist/expected/btree_gist.out b/contrib/btree_gist/expected/btree_gist.out
index fdcbfd598a..2c7cbd620e 100644
--- a/contrib/btree_gist/expected/btree_gist.out
+++ b/contrib/btree_gist/expected/btree_gist.out
@@ -5,7 +5,7 @@
 \set ECHO none
 create table inttmp (b int4);
 \copy inttmp from 'data/test_btree.data'
-create table tstmp ( t datetime );
+create table tstmp ( t timestamp without time zone );
 \copy tstmp from 'data/test_btree_ts.data'
 -- without idx
 select count(*) from inttmp where b <=10;
@@ -14,10 +14,10 @@ select count(*) from inttmp where b <=10;
     11
 (1 row)
 
-select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+select count(*) from tstmp where t < '2001-05-29 08:33:09';
  count 
 -------
-     7
+    66
 (1 row)
 
 -- create idx
@@ -31,9 +31,9 @@ select count(*) from inttmp where b <=10;
     11
 (1 row)
 
-select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+select count(*) from tstmp where t < '2001-05-29 08:33:09';
  count 
 -------
-     7
+    66
 (1 row)
 
diff --git a/contrib/btree_gist/sql/btree_gist.sql b/contrib/btree_gist/sql/btree_gist.sql
index d408105cc7..31c778b747 100644
--- a/contrib/btree_gist/sql/btree_gist.sql
+++ b/contrib/btree_gist/sql/btree_gist.sql
@@ -10,7 +10,7 @@ create table inttmp (b int4);
 
 \copy inttmp from 'data/test_btree.data'
 
-create table tstmp ( t datetime );
+create table tstmp ( t timestamp without time zone );
 
 \copy tstmp from 'data/test_btree_ts.data'
 
@@ -18,7 +18,7 @@ create table tstmp ( t datetime );
 
 select count(*) from inttmp where b <=10;
 
-select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+select count(*) from tstmp where t < '2001-05-29 08:33:09';
 
 -- create idx
 
@@ -32,5 +32,5 @@ set enable_seqscan=off;
 
 select count(*) from inttmp where b <=10;
 
-select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+select count(*) from tstmp where t < '2001-05-29 08:33:09';