diff --git a/books/base.yml b/books/base.yml
index 6cbcf63..adff0f6 100644
--- a/books/base.yml
+++ b/books/base.yml
@@ -1,6 +1,6 @@
 #!/usr/bin/env ansible-playbook
 ---
-- hosts: all, tests
+- hosts: all, !tests
   roles:
     - base_config
     - create_users