diff --git a/installers/full_install_osm.sh b/installers/full_install_osm.sh
index fb323ba..d2b08db 100755
--- a/installers/full_install_osm.sh
+++ b/installers/full_install_osm.sh
@@ -1538,7 +1538,7 @@
 INSTALL_NODOCKER=""
 INSTALL_NOJUJU=""
 KUBERNETES=""
-NGUI=""
+NGUI="y"
 INSTALL_K8S_MONITOR=""
 INSTALL_NOHOSTCLIENT=""
 SESSION_ID=`date +%s`
@@ -1592,8 +1592,8 @@
             usage && exit 1
             ;;
         n)
-            [ "${OPTARG}" == "lwui" ] && continue
-            [ "${OPTARG}" == "ngui" ] && NGUI="y" && continue
+            [ "${OPTARG}" == "lwui" ] && NGUI="" && continue
+            [ "${OPTARG}" == "ngui" ] && continue
             echo -e "Invalid argument for -n : ' $OPTARG'\n" >&2
             usage && exit 1
             ;;