diff --git a/phpBB/db/schemas/mssql_schema.sql b/phpBB/db/schemas/mssql_schema.sql
index a4ee0eb5aa..ac95defdd6 100644
--- a/phpBB/db/schemas/mssql_schema.sql
+++ b/phpBB/db/schemas/mssql_schema.sql
@@ -318,7 +318,7 @@ CREATE TABLE [phpbb_users] (
 	[user_regdate] [int] NOT NULL ,
 	[user_level] [smallint] NOT NULL ,
 	[user_posts] [int] NOT NULL ,
-	[user_timezone] [real] NOT NULL ,
+	[user_timezone] [decimal] (4,2) NOT NULL ,
 	[user_style] [int] NULL ,
 	[user_lang] [varchar] (255) NULL ,
 	[user_dateformat] [varchar] (14) NOT NULL ,
diff --git a/phpBB/db/schemas/mysql_schema.sql b/phpBB/db/schemas/mysql_schema.sql
index 75e9fffd46..02459360d4 100644
--- a/phpBB/db/schemas/mysql_schema.sql
+++ b/phpBB/db/schemas/mysql_schema.sql
@@ -463,7 +463,7 @@ CREATE TABLE phpbb_users (
    user_regdate int(11) DEFAULT '0' NOT NULL, 
    user_level tinyint(4) DEFAULT '0',
    user_posts mediumint(8) UNSIGNED DEFAULT '0' NOT NULL,
-   user_timezone float DEFAULT '0' NOT NULL,
+   user_timezone decimal(4,2) DEFAULT '0' NOT NULL,
    user_style tinyint(4),
    user_lang varchar(255),
    user_dateformat varchar(14) DEFAULT 'd M Y H:i' NOT NULL,
diff --git a/phpBB/db/schemas/postgres_schema.sql b/phpBB/db/schemas/postgres_schema.sql
index 7298cd553f..92be0f31ca 100644
--- a/phpBB/db/schemas/postgres_schema.sql
+++ b/phpBB/db/schemas/postgres_schema.sql
@@ -478,7 +478,7 @@ CREATE TABLE phpbb_users (
    user_avatar_type int2 DEFAULT '0' NOT NULL, 
    user_level int4 DEFAULT '1',
    user_lang varchar(255),
-   user_timezone real DEFAULT '0' NOT NULL,
+   user_timezone decimal(4) DEFAULT '0' NOT NULL,
    user_dateformat varchar(14) DEFAULT 'd M Y H:m' NOT NULL,
    user_notify_pm int2 DEFAULT '1' NOT NULL,
    user_popup_pm int2 DEFAULT '0' NOT NULL,