diff --git a/src/tixlbase/cache.py b/src/tixlbase/cache.py
index d9f635f90..4efd0bf72 100644
--- a/src/tixlbase/cache.py
+++ b/src/tixlbase/cache.py
@@ -39,7 +39,7 @@ class EventRelatedCache:
         return key
 
     def _strip_prefix(self, key):
-        return key.split(":", maxsplit=3)[-1] if 'event:' in key else key
+        return key.split(":", 3)[-1] if 'event:' in key else key
 
     def clear(self):
         try: