diff --git a/lib/services/server_service.dart b/lib/services/server_service.dart
index 8ccface..259b61d 100644
--- a/lib/services/server_service.dart
+++ b/lib/services/server_service.dart
@@ -28,7 +28,7 @@ class ServerService {
     
     Map<String, dynamic> requestBody = {
       'server_id': fromEnivronment('SERVER_ID')!,
-      "port": int.tryParse(fromEnivronment('EXTERNAL_PORT')) ?? 3000,
+      "port": int.tryParse(fromEnivronment('EXTERNAL_PORT') ?? '') ?? 3000,
       'registration_auth': registrationAuth,
     };