diff --git a/tasks/main.yml b/tasks/main.yml
index 45dca82..44134cb 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -18,3 +18,4 @@
     http_proxy: "{{ http_proxy }}"
     https_proxy: "{{ https_proxy }}"
     no_proxy: "{{ no_proxy }}"
+  when: yum_repositories is defined