diff --git a/tasks/main.yml b/tasks/main.yml
index 3327ccf..395784b 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -88,7 +88,7 @@
           create_homedir = true
           homedir_umask = 077
           use_fully_qualified_names = false
-          ad_hostname = "{{ ad_netbios_name }}$"
+          ad_hostname = "{{ ad_netbios_name | default(inventory_hostname) }}"
 
 - name: Start sssd service
   service: