diff --git a/bin/dbsv-update.php b/bin/dbsv-update.php
index 9181f04e..6c9fa041 100644
--- a/bin/dbsv-update.php
+++ b/bin/dbsv-update.php
@@ -165,4 +165,12 @@
 				) ENGINE=MyISAM DEFAULT CHARSET=utf8");
 	}
 
+	function dbv_107()  // sync of table definitions, developer and production system	
+	{
+		sql("ALTER TABLE `caches` MODIFY `meta_last_modified` datetime NOT NULL COMMENT 'via Trigger (stat_caches, gk_item_waypoint)'");
+		sql("ALTER TABLE `countries` MODIFY `en` varchar(128) NOT NULL");
+		if (!sql_index_exists('cache_reports', 'userid'))
+			sql("ALTER TABLE `cache_reports` ADD INDEX `userid` (`userid`)");
+	}
+
 ?>
\ No newline at end of file
diff --git a/htdocs/doc/sql/tables/cache_reports.sql b/htdocs/doc/sql/tables/cache_reports.sql
index 1ab8d3ac..7de2fa8f 100644
--- a/htdocs/doc/sql/tables/cache_reports.sql
+++ b/htdocs/doc/sql/tables/cache_reports.sql
@@ -12,5 +12,6 @@ CREATE TABLE `cache_reports` (
   `lastmodified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
   PRIMARY KEY  (`id`),
   KEY `status` (`status`,`adminid`),
-  KEY `status_2` (`adminid`,`status`)
+  KEY `status_2` (`adminid`,`status`),
+  KEY `userid` (`userid`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='submitted reports on caches' ;
diff --git a/htdocs/lib2/db.inc.php b/htdocs/lib2/db.inc.php
index 4376bbb3..470c7dd0 100644
--- a/htdocs/lib2/db.inc.php
+++ b/htdocs/lib2/db.inc.php
@@ -1120,4 +1120,15 @@
 										 '', $opt['db']['placeholder']['db'], $table, $field) );
 	}
 
+	// test if a database index exists
+	function sql_index_exists($table, $index)
+	{
+		global $opt;
+
+		return sql_value("SELECT COUNT(*)
+		                    FROM `information_schema`.`statistics`
+		                   WHERE `table_schema`='&1' AND `table_name`='&2' AND `index_name`='&3'",
+										 0, $opt['db']['placeholder']['db'], $table, $index) > 0;
+	}
+
 ?>
\ No newline at end of file