diff --git a/wallace/module_resources.py b/wallace/module_resources.py
--- a/wallace/module_resources.py
+++ b/wallace/module_resources.py
@@ -503,7 +503,7 @@
 
             # consider recurring events and get real end date
             if event.is_recurring():
-                dt_end = event.get_last_occurrence()
+                dt_end = to_dt(event.get_last_occurrence())
                 if dt_end is None:
                     # skip if recurring forever
                     continue