diff --git a/cmd/root.go b/cmd/root.go
index ff73335..7b748f1 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -104,10 +104,16 @@ func initConfig() {
 		"image_dir",
 		"version",
 		"webserver_port",
+		"mqtt_broker_url",
+		"mqtt_broker_user",
+		"mqtt_broker_password",
+		"mqtt_presence_topic",
+		"kiosk_cmd_screen_on",
+		"kiosk_cmd_screen_off",
 	}
 	for _, key := range expected_config {
 		if !viper.IsSet(key) {
-			fmt.Fprintf(os.Stderr, "Missing configuration value: %s\n", key)
+			log.Fatalf("Missing configuration value: %s\n", key)
 			os.Exit(1)
 		}
 	}
diff --git a/cmd/root_test.go b/cmd/root_test.go
index 0f512a0..434e216 100644
--- a/cmd/root_test.go
+++ b/cmd/root_test.go
@@ -14,6 +14,12 @@ func TestInitConfig(t *testing.T) {
 	viper.Set("deployment", "testing")
 	viper.Set("image_dir", "/tmp")
 	viper.Set("webserver_port", "8080")
+	viper.Set("mqtt_broker_url", "mqtt://example.com:1883")
+	viper.Set("mqtt_broker_user", "testuser")
+	viper.Set("mqtt_broker_password", "testpass")
+	viper.Set("mqtt_presence_topic", "home/foo/test")
+	viper.Set("kiosk_cmd_screen_on", "echo screen on")
+	viper.Set("kiosk_cmd_screen_off", "echo screen off")
 
 	initConfig()
 	assert.Equal(t, gitVersion, viper.GetString("version"), "config version mismatch")
@@ -25,6 +31,12 @@ func TestInitConfigMissingImageDir(t *testing.T) {
 		viper.Set("deployment", "testing")
 		viper.Set("version", "vTest")
 		viper.Set("webserver_port", "8080")
+		viper.Set("mqtt_broker_url", "mqtt://example.com:1883")
+		viper.Set("mqtt_broker_user", "testuser")
+		viper.Set("mqtt_broker_password", "testpass")
+		viper.Set("mqtt_presence_topic", "home/foo/test")
+		viper.Set("kiosk_cmd_screen_on", "echo screen on")
+		viper.Set("kiosk_cmd_screen_off", "echo screen off")
 
 		initConfig()
 		return
diff --git a/kiosk/kiosk.go b/kiosk/kiosk.go
index 64a20cb..e32bf0f 100644
--- a/kiosk/kiosk.go
+++ b/kiosk/kiosk.go
@@ -10,11 +10,13 @@ import (
 type handler func(area string, present bool)
 
 type configObj struct {
-	logger        *slog.Logger
-	broker        string
-	username      string
-	password      string
-	presenceTopic string
+	logger         *slog.Logger
+	broker         string
+	username       string
+	password       string
+	presenceTopic  string
+	screen_on_cmd  string
+	screen_off_cmd string
 }
 
 var config = configObj{}
@@ -25,6 +27,8 @@ func Run(rootLogger *slog.Logger, exitch chan bool, ctx context.Context) {
 	config.username = viper.GetString("mqtt_broker_user")
 	config.password = viper.GetString("mqtt_broker_password")
 	config.presenceTopic = viper.GetString("mqtt_presence_topic")
+	config.screen_on_cmd = viper.GetString("kiosk_cmd_screen_on")
+	config.screen_off_cmd = viper.GetString("kiosk_cmd_screen_off")
 	config.logger.Info("starting MQTT broker client")
 	brokerConsume(ctx)
 	exitch <- true
diff --git a/modd.conf b/modd.conf
index 11b959e..47cfce8 100644
--- a/modd.conf
+++ b/modd.conf
@@ -9,5 +9,5 @@
 **/*.go .env {
     prep: go mod tidy
     prep: go test @dirmods
-    daemon +sigterm: go run ./main.go 
+    daemon +sigterm: go run ./main.go
 }