diff --git a/calsocial/calendar_system/gregorian.py b/calsocial/calendar_system/gregorian.py
index f80a767..1113761 100644
--- a/calsocial/calendar_system/gregorian.py
+++ b/calsocial/calendar_system/gregorian.py
@@ -154,8 +154,10 @@ class GregorianCalendar(CalendarSystem):
         start_timestamp = date.replace(hour=0, minute=0, second=0, microsecond=0)
         end_timestamp = start_timestamp + timedelta(days=1)
 
-        events = events.filter(((Event.start_time >= start_timestamp) & (Event.start_time < end_timestamp)) |
-                               ((Event.end_time >= start_timestamp) & (Event.end_time < end_timestamp))) \
+        events = events.filter(((Event.start_time >= start_timestamp) &
+                                (Event.start_time < end_timestamp)) |
+                               ((Event.end_time >= start_timestamp) &
+                                (Event.end_time < end_timestamp))) \
                        .order_by('start_time', 'end_time')
 
         return events