diff --git a/etc/inc/openvpn.auth-user.php b/etc/inc/openvpn.auth-user.php
index 1b8737f218..b753f71311 100644
--- a/etc/inc/openvpn.auth-user.php
+++ b/etc/inc/openvpn.auth-user.php
@@ -186,7 +186,7 @@ if (isset($attributes['framed_ip'])) {
 		$content .= "ifconfig-push {$attributes['framed_ip']} {$attributes['framed_mask']}";
 	} else {
 		$content .= "topology net30\n";
-		$content .= "ifconfig-push {$attributes['framed_ip']} ". long2ip((ip2long($attributes['framed_ip']) + 1));
+		$content .= "ifconfig-push {$attributes['framed_ip']} ". long2ip((ip2long($attributes['framed_ip']) - 1));
 	}
 }