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-rw-r--r--django/db/backends/base/operations.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/django/db/backends/base/operations.py b/django/db/backends/base/operations.py
index acca12708a..5d3cddff9d 100644
--- a/django/db/backends/base/operations.py
+++ b/django/db/backends/base/operations.py
@@ -497,7 +497,7 @@ class BaseDatabaseOperations(object):
Transforms a string representation of an IP address into the expected
type for the backend driver.
"""
- return value
+ return value or None
def year_lookup_bounds_for_date_field(self, value):
"""