diff --git a/roles/timesync-enabled/tasks/main.yml b/roles/timesync-enabled/tasks/main.yml
index 9c24dec..c09b4a1 100644
--- a/roles/timesync-enabled/tasks/main.yml
+++ b/roles/timesync-enabled/tasks/main.yml
@@ -6,8 +6,10 @@
 
 
 - name: Include each network variables if there is no host variable
-  include_vars: "vars/timesync_{{ ansible_default_ipv4.network }}.yml"
-  when: ansible_default_ipv4 and (timesync_servers|default(False) == False and timesync_pools|default(False) == False)
+  include_vars: "{{ timesync_varfile_network }}"
+  vars:
+    timesync_varfile_network: "vars/timesync_{{ ansible_default_ipv4.network }}.yml"
+  when: ansible_default_ipv4 and timesync_varfile_network is file and (timesync_servers|default(False) == False and timesync_pools|default(False) == False)
 
 
 - name: "Set NTP »pools« for machines without default gateway"