diff --git a/chezbetty/datalayer.py b/chezbetty/datalayer.py
index 827e650..4f0aff1 100644
--- a/chezbetty/datalayer.py
+++ b/chezbetty/datalayer.py
@@ -49,6 +49,7 @@ def wrapper(*args, **kwargs):
 def can_undo_event(e):
     if e.type != 'deposit' and e.type != 'purchase' and e.type != 'restock' \
        and e.type != 'inventory' and e.type != 'emptycashbox' \
+       and e.type != 'emptysafe' \
        and e.type != 'donation' and e.type != 'withdrawal' \
        and e.type != 'reimbursement':
         return False