diff --git a/src/agenda_culturel/filters.py b/src/agenda_culturel/filters.py
index 07c23e8..a5d9d57 100644
--- a/src/agenda_culturel/filters.py
+++ b/src/agenda_culturel/filters.py
@@ -137,7 +137,11 @@ class EventFilter(django_filters.FilterSet):
         if self.get_cleaned_data("position") is None or self.get_cleaned_data("radius") is None:
             return parent
         d = self.get_cleaned_data("radius")
-        p = self.get_cleaned_data("position").location
+        p = self.get_cleaned_data("position")
+        if not isinstance(d, str) or not isinstance(p, ReferenceLocation):
+            return parent
+        p = p.location
+
         return parent.exclude(exact_location=False).filter(exact_location__location__distance_lt=(p, D(km=d)))
 
     def get_url(self):
@@ -188,6 +192,7 @@ class EventFilter(django_filters.FilterSet):
 
 
     def get_cleaned_data(self, name):
+
         try:
             return self.form.cleaned_data[name]
         except AttributeError: