diff --git a/mysql-test/r/func_timestamp.result b/mysql-test/r/func_timestamp.result
index d9912f08b72..495fedea9e6 100644
--- a/mysql-test/r/func_timestamp.result
+++ b/mysql-test/r/func_timestamp.result
@@ -1,4 +1,5 @@
 drop table if exists t1;
+set time_zone="+03:00";
 create table t1 (Zeit time, Tag tinyint not null, Monat tinyint not null,
 Jahr smallint not null, index(Tag), index(Monat), index(Jahr) );
 insert into t1 values ("09:26:00",16,9,1998),("09:26:00",16,9,1998);
@@ -9,3 +10,4 @@ Date	Unix
 1998-9-16 09:26:00	905927160
 1998-9-16 09:26:00	905927160
 drop table t1;
+set time_zone= @@global.time_zone;
diff --git a/mysql-test/r/type_timestamp.result b/mysql-test/r/type_timestamp.result
index 61ed6bbabf3..0817cc3b6c7 100644
--- a/mysql-test/r/type_timestamp.result
+++ b/mysql-test/r/type_timestamp.result
@@ -1,4 +1,5 @@
 drop table if exists t1,t2;
+set time_zone="+03:00";
 CREATE TABLE t1 (a int, t timestamp);
 CREATE TABLE t2 (a int, t datetime);
 SET TIMESTAMP=1234;
@@ -491,3 +492,4 @@ a	b	c
 5	NULL	2001-09-09 04:46:59
 6	NULL	2006-06-06 06:06:06
 drop table t1;
+set time_zone= @@global.time_zone;
diff --git a/mysql-test/t/func_timestamp.test b/mysql-test/t/func_timestamp.test
index e1bb7e878ee..05a91b06d28 100644
--- a/mysql-test/t/func_timestamp.test
+++ b/mysql-test/t/func_timestamp.test
@@ -6,6 +6,9 @@
 drop table if exists t1;
 --enable_warnings
 
+# Set timezone to GMT-3, to make it possible to use "interval 3 hour"
+set time_zone="+03:00";
+
 create table t1 (Zeit time, Tag tinyint not null, Monat tinyint not null,
 Jahr smallint not null, index(Tag), index(Monat), index(Jahr) );
 insert into t1 values ("09:26:00",16,9,1998),("09:26:00",16,9,1998);
@@ -15,3 +18,6 @@ FROM t1;
 drop table t1;
 
 # End of 4.1 tests
+
+# Restore timezone to default
+set time_zone= @@global.time_zone;
diff --git a/mysql-test/t/type_timestamp.test b/mysql-test/t/type_timestamp.test
index f96beedbebc..ddfc3f11665 100644
--- a/mysql-test/t/type_timestamp.test
+++ b/mysql-test/t/type_timestamp.test
@@ -6,6 +6,9 @@
 drop table if exists t1,t2;
 --enable_warnings
 
+# Set timezone to GMT-3, to make it possible to use "interval 3 hour"
+set time_zone="+03:00";
+
 CREATE TABLE t1 (a int, t timestamp);
 CREATE TABLE t2 (a int, t datetime);
 SET TIMESTAMP=1234;
@@ -322,3 +325,6 @@ select * from t1;
 drop table t1;
 
 # End of 4.1 tests
+
+# Restore timezone to default
+set time_zone= @@global.time_zone;