diff --git a/etc/inc/filter.inc b/etc/inc/filter.inc
index d30ed247bc..ece6b0432c 100644
--- a/etc/inc/filter.inc
+++ b/etc/inc/filter.inc
@@ -124,9 +124,9 @@ function filter_pflog_start() {
 	}
 	mute_kernel_msgs();
 	$output = 0;
-	exec("/bin/pgrep -af 'tcpdump -s 256 -v -l -n -e -ttt -i pflog0'", $output, $retval);
+	exec("/bin/pgrep -af 'tcpdump -s 256 -v -S -l -n -e -ttt -i pflog0'", $output, $retval);
 	if($retval != 0)
-		mwexec_bg("/usr/sbin/tcpdump -s 256 -v -l -n -e -ttt -i pflog0 | logger -t pf -p local0.info");
+		mwexec_bg("/usr/sbin/tcpdump -s 256 -v -S -l -n -e -ttt -i pflog0 | logger -t pf -p local0.info");
 	unmute_kernel_msgs();
 }