diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index e31eeda..3ee603f 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -143,7 +143,12 @@ class EventFilter(django_filters.FilterSet):
             return []
     def get_recurrence_filtering(self):
         if "recurrences" in self.form.cleaned_data:
-            return dict(self.RECURRENT_CHOICES)[self.form.cleaned_data["recurrences"]]
+            d = dict(self.RECURRENT_CHOICES)
+            v = self.form.cleaned_data["recurrences"]
+            if v in d:
+                return d[v]
+            else:
+                return ""
         else:
             return ""