diff --git a/roles/database/tasks/backup.yml b/roles/database/tasks/backup.yml
index 22971665b9b2e524edc873148ec80a7daef427fb..72656fc8481d9f9d0b3a05ca31da4204d094a1ff 100644
--- a/roles/database/tasks/backup.yml
+++ b/roles/database/tasks/backup.yml
@@ -6,7 +6,7 @@
     state: directory
     owner: root
     group: root
-    mode: 0700
+    mode: "0700"
   with_items:
     - "/srv/backup"
     - "/srv/backup/mariadb"
@@ -17,4 +17,4 @@
     dest: "/etc/duply/main/pre.d/dump_{{ db_name }}.sh"
     owner: root
     group: root
-    mode: 0700
+    mode: "0700"