diff --git a/shared/tests/mixins.py b/shared/tests/mixins.py
index 7b5edf6a..266dfc10 100644
--- a/shared/tests/mixins.py
+++ b/shared/tests/mixins.py
@@ -115,8 +115,8 @@ class ICalMixin:
                 return False
         return True
 
-    def _find_event(self, ev, l):
-        for i, elt in enumerate(l):
+    def _find_event(self, ev, rem):
+        for i, elt in enumerate(rem):
             if self._test_event_equal(ev, elt):
                 return i
         return None