diff --git a/tasks/main.yml b/tasks/main.yml
index eee6311..3758c8a 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,12 +1,12 @@
 - name: install dbus (needed to set the hostname with systemd)
   apt:
     pkg: dbus
-  when: rootpath == ""
+  when: not rootpath
 
 - name: set hostname with systemd
   hostname:
     name: "{{ inventory_hostname_short }}"
-  when: rootpath == ""
+  when: not rootpath
 
 - name: customize vm image hostname
   copy: