diff --git a/roles/nagios_server/templates/nagios/scripts/matrix-notify.sh.j2 b/roles/nagios_server/templates/nagios/scripts/matrix-notify.sh.j2
index caa3674853..07842a174c 100644
--- a/roles/nagios_server/templates/nagios/scripts/matrix-notify.sh.j2
+++ b/roles/nagios_server/templates/nagios/scripts/matrix-notify.sh.j2
@@ -3,4 +3,4 @@ stdin=$(cat)
 
 host=$(hostname -s)
 
-curl -X POST -H "Content-Type: application/json" -u {{ matrix_nonbot_auth }} https://maubot.apps.ocp.fedoraproject.org/plugin/nonbot-nagios/send?host=$host&service=$1 -d "$stdin"
+curl -X POST -H "Content-Type: application/json" -u {{ matrix_nonbot_auth }} https://maubot.apps.ocp.fedoraproject.org/plugin/nonbot-nagios/send?host=$host\&service=$1 -d "$stdin"