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-rw-r--r--lisp/image/wallpaper.el2
1 files changed, 2 insertions, 0 deletions
diff --git a/lisp/image/wallpaper.el b/lisp/image/wallpaper.el
index a2f175e4628..c778264d3ef 100644
--- a/lisp/image/wallpaper.el
+++ b/lisp/image/wallpaper.el
@@ -432,6 +432,8 @@ See also `wallpaper-default-width'.")
;;; wallpaper-set
+(declare-function x-open-connection "xfns.c")
+
(defun wallpaper--x-monitor-name ()
"Get the monitor name for `wallpaper-set'.
On a graphical display, try using the same monitor as the current