diff -Nru zabbix-2.2.3.orig/frontends/php/include/classes/class.globalregexp.php zabbix-2.2.3/frontends/php/include/classes/class.globalregexp.php
--- zabbix-2.2.3.orig/frontends/php/include/classes/class.globalregexp.php	2014-04-07 18:03:42.000000000 +0900
+++ zabbix-2.2.3/frontends/php/include/classes/class.globalregexp.php	2014-04-17 01:47:38.000000000 +0900
@@ -167,7 +167,7 @@
 	 */
 	private static function _matchRegular(array $expression, $string) {
 		$pattern = '/'.$expression['expression'].'/';
-		if ($expression['case_sensitive']) {
+		if (!$expression['case_sensitive']) {
 			$pattern .= 'i';
 		}