diff --git a/tasks/main.yml b/tasks/main.yml
index ddd5367..ba34f09 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -60,9 +60,10 @@
 
 - name: Check supported Wake-on-LAN modes
   ansible.builtin.shell: "ethtool {{ item }} | grep 'Supports Wake-on' | tail -1 | awk '{print $3}'"
-  loop: "{{ interfaces }}"
+  loop: "{{ en_interfaces }}"
   register: wol_supported
   changed_when: false
+  when: en_interfaces | length > 0
 
 - name: Display supported WoL modes
   ansible.builtin.debug: