1 files changed, 1 insertions, 1 deletions
diff --git a/xlib.py b/xlib.py
index 09ec18f..051b21f 100644
--- a/xlib.py
+++ b/xlib.py
@@ -66,7 +66,7 @@ class Listener(Thread):
         # Create a reveverse dictionnary for getting the users added first
         # In python, the elements in a dictionnary are sorted by insertion
         # order, so we get the user added first here
-        for pattern in reversed(self.mapping):
+        for pattern in reversed(self.mapping.keys()):
             # Ignore the default layout
             if pattern == "default":
                 continue