diff --git a/temba/utils/dates.py b/temba/utils/dates.py
index cac229850b..bb70cf47cb 100644
--- a/temba/utils/dates.py
+++ b/temba/utils/dates.py
@@ -15,7 +15,7 @@ def datetime_to_str(date_obj, format, tz):
     if not date_obj:
         return None
 
-    if type(date_obj) == date:
+    if isinstance(date_obj, date):
         date_obj = datetime.combine(date_obj, time(0, 0, 0)).replace(tzinfo=tz)
 
     if isinstance(date_obj, datetime):