diff --git a/appengine/ndb/modeling/keyproperty_models.py b/appengine/ndb/modeling/keyproperty_models.py
index f3913b1ba0e6..c179e85e01d2 100644
--- a/appengine/ndb/modeling/keyproperty_models.py
+++ b/appengine/ndb/modeling/keyproperty_models.py
@@ -25,7 +25,7 @@
 # In the original article, it uses ReferenceProperty on the
 # PhoneNumber model. With ndb, there is no ReferenceProperty any more,
 # so here we use KeyProperty first. However this pattern has a
-# consistensy issue, shown in the test_fails function in
+# consistency issue, shown in the test_fails function in
 # test/test_keyproperty_models.py.