diff --git a/minifirewall/files/minifirewall_status b/minifirewall/files/minifirewall_status
index 7bf09285..2eec3697 100644
--- a/minifirewall/files/minifirewall_status
+++ b/minifirewall/files/minifirewall_status
@@ -2,7 +2,7 @@
 
 is_started() {
   /sbin/iptables -L -n \
-    | grep -E "^(DROP\s+udp|ACCEPT\s+icmp)\s+--\s+0\.0\.0\.0\/0\s+0\.0\.0\.0\/0\s*$"
+    | grep --quiet --extended-regexp "^(DROP\s+(udp|17)|ACCEPT\s+(icmp|1))\s+--\s+0\.0\.0\.0\/0\s+0\.0\.0\.0\/0\s*$"
 }
 return_started() {
   echo "started"