diff --git a/docs/custom_model_fields.txt b/docs/custom_model_fields.txt
index 956747f1b9..6b8f3c3ac6 100644
--- a/docs/custom_model_fields.txt
+++ b/docs/custom_model_fields.txt
@@ -558,7 +558,7 @@ serializer output in some other place, outside of Django.
 Returns a dictionary, mapping the field's attribute name to a
 flattened string version of the data. This method has some internal
 uses that aren't of interest to use here (mostly having to do with
-formss). For our purposes, it's sufficient to return a one item
+forms). For our purposes, it's sufficient to return a one item
 dictionary that maps the attribute name to a string.
 
 This method is used by the serializers to convert the field into a string for