diff --git a/docs/topics/auth/customizing.txt b/docs/topics/auth/customizing.txt
index a2101f28d5f..0cb04011086 100644
--- a/docs/topics/auth/customizing.txt
+++ b/docs/topics/auth/customizing.txt
@@ -594,7 +594,7 @@ The following methods are available on any subclass of
         .. versionchanged:: 1.6
 
             In Django 1.4 and 1.5, a blank string was unintentionally stored
-            as an unsable password as well.
+            as an unusable password as well.
 
     .. method:: models.AbstractBaseUser.check_password(raw_password)