diff --git a/e107_core/sql/core_sql.php b/e107_core/sql/core_sql.php
index cfb483cd36..f9d5f5ad9c 100755
--- a/e107_core/sql/core_sql.php
+++ b/e107_core/sql/core_sql.php
@@ -478,8 +478,9 @@
   session_id varchar(250) NOT NULL default '',
   session_expires int(10) unsigned NOT NULL default 0,
   session_user int(10) unsigned default NULL,
-  session_data mediumtext NOT NULL,
-  PRIMARY KEY  (session_id)
+  session_data longtext NOT NULL,
+  PRIMARY KEY  (session_id),
+  INDEX (session_expires)
 ) ENGINE=MyISAM;
 # --------------------------------------------------------