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-rw-r--r--django/contrib/admin/util.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/django/contrib/admin/util.py b/django/contrib/admin/util.py
index 078adbe827..a53cd367b4 100644
--- a/django/contrib/admin/util.py
+++ b/django/contrib/admin/util.py
@@ -37,9 +37,9 @@ def prepare_lookup_value(key, value):
# if key ends with __in, split parameter into separate values
if key.endswith('__in'):
value = value.split(',')
- # if key ends with __isnull, special case '' and false
+ # if key ends with __isnull, special case '' and the string literals 'false' and '0'
if key.endswith('__isnull'):
- if value.lower() in ('', 'false'):
+ if value.lower() in ('', 'false', '0'):
value = False
else:
value = True