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-rw-r--r--exwm-randr.el3
1 files changed, 2 insertions, 1 deletions
diff --git a/exwm-randr.el b/exwm-randr.el
index c1d2bf5255fc..37f40f12c197 100644
--- a/exwm-randr.el
+++ b/exwm-randr.el
@@ -210,7 +210,8 @@ the first one in result being the primary output."
   ;; Prevent frame parameters introduced by this module from being
   ;; saved/restored.
   (dolist (i '(exwm-randr-output))
-    (push (cons i :never) frameset-filter-alist)))
+    (unless (assq i frameset-filter-alist)
+      (push (cons i :never) frameset-filter-alist))))
 
 (defun exwm-randr--exit ()
   "Exit the RandR module."