diff --git a/config/zabbix_agentd/userparameter_ipfire.conf b/config/zabbix_agentd/userparameter_ipfire.conf
index b8b512d82..ba0c6c2ca 100644
--- a/config/zabbix_agentd/userparameter_ipfire.conf
+++ b/config/zabbix_agentd/userparameter_ipfire.conf
@@ -3,7 +3,7 @@
 # Internet Gateway ping timings, can be used to measure "Internet Line Quality"
 UserParameter=ipfire.net.gateway.pingtime,sudo /usr/sbin/fping -c 3 gateway 2>&1 | tail -n 1 | awk '{print $NF}' | cut -d '/' -f2
 # Internet Gateway availability, can be used to check Internet connection
-UserParameter=ipfire.net.gateway.ping,sudo /usr/sbin/fping -q -r 3 gateway; [ ! $? ]; echo $?
+UserParameter=ipfire.net.gateway.ping,sudo /usr/sbin/fping -q -r 3 gateway; [ ! $? == 0 ]; echo $?
 # Firewall Filter Forward chain drops in bytes/chain (JSON), can be used for discovery of firewall chains and monitoring of firewall hits on each chain
 UserParameter=ipfire.net.fw.hits.raw,sudo /usr/local/bin/getipstat -xf | grep "/\* DROP_.* \*/$" | awk 'BEGIN { ORS = ""; print "["} { printf "%s{\"chain\": \"%s\", \"bytes\": \"%s\"}", separator, substr($11, 6), $2; separator = ", "; } END { print"]" }'
 # Number of currently Active DHCP leases