diff --git a/roles/mysql/backup_database/tasks/main.yml b/roles/mysql/backup_database/tasks/main.yml
index 347a956..737de01 100644
--- a/roles/mysql/backup_database/tasks/main.yml
+++ b/roles/mysql/backup_database/tasks/main.yml
@@ -19,8 +19,8 @@
 
 - name: Configure auto backup mysql database of {{ database_name }}
   cron:
-    hour: 1
-    minute: 0
+    hour: "1"
+    minute: "0"
     job: "{{ backup_script }}"
     name: "backup mysql database of {{ database_name }}"
     state: present