diff --git a/skills/google-calendar/scripts/google_calendar.py b/skills/google-calendar/scripts/google_calendar.py
index 1743cd7..ac26daa 100755
--- a/skills/google-calendar/scripts/google_calendar.py
+++ b/skills/google-calendar/scripts/google_calendar.py
@@ -91,8 +91,8 @@ def resolve_calendar_id(calendar_identifier: Optional[str] = None) -> str:
     if ident_lower in ("regensburg", "rgb", "regensburg-und-mehr", "regensburg_und_mehr", "events", "stadt"):
         if not CALENDAR_ID_REGENSBURG:
             raise ValueError(
-                "CALENDAR_ID_REGENSBURG is not configured. Please set the environment variable "
-                "CALENDAR_ID_REGENSBURG to the Google Calendar ID of the Regensburg calendar."
+                "Der Regensburg- / Event-Kalender ist noch nicht freigeschaltet (Berechtigungen ausstehend). "
+                "Bitte nutze vorerst den Familienkalender ('family')."
             )
         return CALENDAR_ID_REGENSBURG