diff --git a/module.nix b/module.nix
index 7cb2795..c6608bc 100644
--- a/module.nix
+++ b/module.nix
@@ -55,6 +55,7 @@ in {
           "--mqtt-host=${cfg.mqtt.host}"
           "--mqtt-port=${toString cfg.mqtt.port}"
           "--notification-topic=${cfg.notification-topic}"
+          "--app-name=tattler"
         ] ++ (optional cfg.verbose "--verbose")
           ++ (optional (cfg.mqtt.user != null) "--mqtt-user=${cfg.mqtt.user}")
           ++ (optional (cfg.mqtt.password-file != null)
diff --git a/src/tattler/cli.clj b/src/tattler/cli.clj
index 3fd5622..95f0168 100644
--- a/src/tattler/cli.clj
+++ b/src/tattler/cli.clj
@@ -42,7 +42,7 @@
     (update result :errors concat missing-errors)))
 
 (defn -main [& args]
-  (let [required-args #{:mqtt-host :mqtt-port :mqtt-user :mqtt-password-file :app-name :notification-topic}
+  (let [required-args #{:mqtt-host :mqtt-port :app-name :notification-topic}
         {:keys [options _ errors summary]} (parse-opts args required-args cli-opts)]
     (when (seq errors) (msg-quit 1 (usage summary errors)))
     (let [{:keys [mqtt-host mqtt-port mqtt-user mqtt-password-file app-name notification-topic]} options