diff --git a/lisp/image/wallpaper.el b/lisp/image/wallpaper.el
index 03b6afa4e0a..d2b82a7af59 100644
--- a/lisp/image/wallpaper.el
+++ b/lisp/image/wallpaper.el
@@ -52,7 +52,7 @@
     ;; Sway (Wayland)
     ("swaybg" "-o" "*" "-i" "%f" "-m" "fill")
     ;; Wayland General
-    ("wbg" %f)
+    ("wbg" "%f")
     ;; Gnome
     ("gsettings" "set" "org.gnome.desktop.background" "picture-uri" "file://%f")
     ;; KDE Plasma