diff --git a/lib/common/messages.dart b/lib/common/messages.dart
index 6f4a914..981a0ea 100644
--- a/lib/common/messages.dart
+++ b/lib/common/messages.dart
@@ -28,4 +28,6 @@ class Course {
   int id;
 
   Course();
+
+  String toString() => title.isEmpty ? 'notitle' : title;
 }