diff --git a/auto-notify.plugin.zsh b/auto-notify.plugin.zsh
index c1fdd4f..3fd166d 100644
--- a/auto-notify.plugin.zsh
+++ b/auto-notify.plugin.zsh
@@ -64,7 +64,7 @@ function _auto_notify_message() {
 		icon_arg="--icon=$icon"
 	fi
 
-        notify-send "$title" "$body" --app-name=zsh $transient "--urgency=$urgency" "--expire-time=$AUTO_NOTIFY_EXPIRE_TIME" $icon_arg
+        notify-send "$title" "$body" --app-name=zsh $transient "--urgency=$urgency" "--expire-time=$AUTO_NOTIFY_EXPIRE_TIME" ${icon_arg:+"$icon_arg"}
     elif [[ "$platform" == "Darwin" ]]; then
         osascript \
           -e 'on run argv' \