diff --git a/docs/models.yml b/docs/models.yml
index 8ee45cf2e..ce8f905b3 100644
--- a/docs/models.yml
+++ b/docs/models.yml
@@ -1653,6 +1653,7 @@ poll:
       - Y
       - YN
       - YNA
+      - N
       - valid
       - cast
       - disabled