diff --git a/etc/inc/filter.inc b/etc/inc/filter.inc
index 801723a18f..25a39c5ab6 100644
--- a/etc/inc/filter.inc
+++ b/etc/inc/filter.inc
@@ -931,8 +931,8 @@ function filter_rules_generate() {
 
 	/* if carp is defined, lets pass the traffic */
 	if(is_carp_defined() == true) {
-		$ipfrules .= "pass on " . $lanif . " proto carp keep state label \"carp\"\n";
-		$ipfrules .= "pass on " . $wanif . " proto carp keep state label \"carp\"\n";
+		$ipfrules .= "pass on " . $lanif . " proto carp from $lanif:network to 224.0.0.18 keep state (no-sync) label \"carp\"\n";
+		$ipfrules .= "pass on " . $wanif . " proto carp from $wanif:network to 224.0.0.18 keep state (no-sync) label \"carp\"\n";
 	}
 
 	/* if squid is installed, lets install its rule */