diff --git a/um.el b/um.el
index a5f2477..2d707b8 100644
--- a/um.el
+++ b/um.el
@@ -432,12 +432,7 @@ Returns the value of next-file computed by um next
 
 \\{um-mode-map}
 "
-  :init-value nil
-  :lighter " uM"
-  :keymap um-mode-map
-  (if um-mode
-      (progn
-        (read-only-mode))
-    (read-only-mode -1)))
+  (read-only-mode)
+  )
 
 (provide 'um)