diff --git a/roles/mgrote_munin_node/tasks/additional.yml b/roles/mgrote_munin_node/tasks/additional.yml
index fce41ac5..06e21d6f 100644
--- a/roles/mgrote_munin_node/tasks/additional.yml
+++ b/roles/mgrote_munin_node/tasks/additional.yml
@@ -4,8 +4,8 @@
     url: "{{ item.src }}"
     dest: "{{ munin_plugin_src_path }}{{ item.name }}"
     mode: '0755'
-    url_username: "{{ munin_node_plugins_repo_user | default ()}}"
-    url_password: "{{ munin_node_plugins_repo_user_pass | default ()}}"
+    url_username: "{{ munin_node_plugins_repo_user | default(omit) }}"
+    url_password: "{{ munin_node_plugins_repo_user_pass | default(omit) }}"
   loop: "{{ munin_node_plugins }}"
   notify: restart munin-node
   #no_log: true TODO