diff --git a/roles/mongodb/defaults/main.yml b/roles/mongodb/defaults/main.yml
index 6aed9834a..61d1d951f 100644
--- a/roles/mongodb/defaults/main.yml
+++ b/roles/mongodb/defaults/main.yml
@@ -1,5 +1,6 @@
 mongodb_install: False
 mongodb_enabled: False
 
-mongodb_db_path: "{{ content_base }}/dbdata/mongodb"    # == /library/dbdata/mongodb/
 mongodb_conf: /etc/mongod.conf
+mongodb_db_path: "{{ content_base }}/dbdata/mongodb"    # == /library/dbdata/mongodb/
+mongodb_db_lock_file: "{{ mongodb_db_path }}/mongod.lock"