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-rw-r--r--django/utils/httpwrappers.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/django/utils/httpwrappers.py b/django/utils/httpwrappers.py
index 32f2bfb8f7..6a64592eaa 100644
--- a/django/utils/httpwrappers.py
+++ b/django/utils/httpwrappers.py
@@ -69,7 +69,7 @@ class QueryDict(MultiValueDict):
def __init__(self, query_string):
MultiValueDict.__init__(self)
self._mutable = True
- for key, value in parse_qsl(query_string, True): # keep_blank_values=True
+ for key, value in parse_qsl((query_string or ''), True): # keep_blank_values=True
self.appendlist(key, value)
self._mutable = False