diff --git a/scripts/install_klipper_webui.sh b/scripts/install_klipper_webui.sh
index 8c6138d..647bcd5 100755
--- a/scripts/install_klipper_webui.sh
+++ b/scripts/install_klipper_webui.sh
@@ -117,7 +117,7 @@ install_webui(){
   $1_port_check
 
   ### ask user to install mjpg-streamer
-  if ls /etc/systemd/system/webcamd.service 2>/dev/null 1>&2; then
+  if ! ls /etc/systemd/system/webcamd.service 2>/dev/null 1>&2; then
     get_user_selection_mjpg-streamer
   fi