diff --git a/roles/wsgi_website/tasks/main.yml b/roles/wsgi_website/tasks/main.yml
index 7a07ae984c935b60ea89c7d034ac94ff1fffcb6b..f0ba29149c1f0b93945d7aea3577aa4b2ba1bcd8 100644
--- a/roles/wsgi_website/tasks/main.yml
+++ b/roles/wsgi_website/tasks/main.yml
@@ -150,6 +150,7 @@
     state: present
     virtualenv: "{{ home }}/virtualenv"
   register: install_additional_packages_in_virtualenv
+  when: "virtualenv_packages"
   notify:
     - Restart WSGI services