diff --git a/package.json b/package.json
index ce2ccb3..c56fba0 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "displayName": "Homebridge UniFi Occupancy",
   "name": "homebridge-unifi-occupancy",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "Homebridge plugin that adds HomeKit occupancy sensors for for selected (types of) devices on a UniFi network to your iOS Home app.",
   "license": "Apache-2.0",
   "repository": {
diff --git a/src/platform.ts b/src/platform.ts
index e1f1781..a35e673 100644
--- a/src/platform.ts
+++ b/src/platform.ts
@@ -41,9 +41,11 @@ export class UnifiOccupancyPlatform implements DynamicPlatformPlugin {
     public readonly config: PlatformConfig,
     public readonly api: API,
   ) {
-    this.api.on('didFinishLaunching', () => {
-      this.setDefaultConfig();
+    if (!this.parseConfig()) {
+      return;
+    }
 
+    this.api.on('didFinishLaunching', () => {
       this.connect();
 
       this.loadDeviceFingerprints()
@@ -54,7 +56,12 @@ export class UnifiOccupancyPlatform implements DynamicPlatformPlugin {
     });
   }
 
-  setDefaultConfig() {
+  parseConfig(): boolean {
+    if (!this.config.unifi) {
+      this.log.error('ERROR: UniFi Controller is not configured.');
+      return false;
+    }
+
     this.config.interval ||= 180;
     this.config.showAsOwner ||= 'smartphone';
     this.config.deviceType ||= {};
@@ -104,6 +111,8 @@ export class UnifiOccupancyPlatform implements DynamicPlatformPlugin {
       ),
     ];
     this.clientRules = this.config.clientRules.map(raw => new ClientRule(this, raw));
+
+    return true;
   }
 
   connect() {