diff --git a/scorched/search.py b/scorched/search.py
index a19dcbb..43209e9 100644
--- a/scorched/search.py
+++ b/scorched/search.py
@@ -859,6 +859,7 @@ class DismaxOptions(Options):
         "tie": float,
         "bq": str,
         "bf": str,
+        "q.alt": str,
     }
 
     def __init__(self, original=None):