diff --git a/bundles/mautrix-whatsapp/metadata.py b/bundles/mautrix-whatsapp/metadata.py
index c41c141..63509aa 100644
--- a/bundles/mautrix-whatsapp/metadata.py
+++ b/bundles/mautrix-whatsapp/metadata.py
@@ -9,7 +9,7 @@ defaults = {
         'mautrix-whatsapp': {
             'services': {
                 'MAUTRIX-WHATSAPP PROCESS': {
-                    'command_on_monitored_host': '/usr/lib/nagios/plugins/check_procs -C mautrix-whatsapp -c 1:',
+                    'command_on_monitored_host': '/usr/lib/nagios/plugins/check_procs -a mautrix-whatsapp -c 1:',
                 },
             },
         },