diff --git a/lib/jabber.php b/lib/jabber.php
index e9968b78f8..586cdec7ea 100644
--- a/lib/jabber.php
+++ b/lib/jabber.php
@@ -54,7 +54,6 @@ function jabber_normalize_jid($jid) {
 	if (preg_match("/(?:([^\@]+)\@)?([^\/]+)(?:\/(.*))?$/", $jid, $matches)) {
 		$node = $matches[1];
 		$server = $matches[2];
-		$resource = $matches[3];
 		return strtolower($node.'@'.$server);
 	} else {
 		return NULL;