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-rw-r--r--django/core/management.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/django/core/management.py b/django/core/management.py
index 2082ba1a61..9aff69119a 100644
--- a/django/core/management.py
+++ b/django/core/management.py
@@ -664,6 +664,8 @@ def get_validation_errors(outfile):
for c in f.choices:
if not type(c) in (tuple, list) or len(c) != 2:
e.add(opts, '"%s" field: "choices" should be a sequence of two-tuples.' % f.name)
+ if f.db_index not in (None, True, False):
+ e.add(opts, '"%s" field: "db_index" should be either None, True or False.' % f.name)
# Check for multiple ManyToManyFields to the same object, and
# verify "singular" is set in that case.