diff --git a/qubes/devices.py b/qubes/devices.py
index 81398d4c4..c97f2fa06 100644
--- a/qubes/devices.py
+++ b/qubes/devices.py
@@ -342,8 +342,8 @@ def assignments(self, persistent=None):
         :file:`qubes.xml`) or not. Device can also be in :file:`qubes.xml`,
         but be temporarily detached.
 
-        :param Optional[bool] persistent: only include devices which are or are not
-        attached persistently.
+        :param Optional[bool] persistent: only include devices which are or are
+        not attached persistently.
         '''
 
         try: