diff --git a/ansible/roles/prometheus-backup/tasks/main.yml b/ansible/roles/prometheus-backup/tasks/main.yml
index ef2cf47e2dc927089a44c1eb2c7996b02a7f4bf9..251fa96c8d72da86568ec8603bd11350d63cfa2a 100644
--- a/ansible/roles/prometheus-backup/tasks/main.yml
+++ b/ansible/roles/prometheus-backup/tasks/main.yml
@@ -17,7 +17,7 @@
         prometheus_backup_gzip_file_path: "{{ prometheus_backup_dir }}/{{ prometheus_backup_gzip_file_name }}"
 
     - name: Save backup
-      shell: tar czf {{ prometheus_backup_gzip_file_path }} /mnt/dockerdata/prometheus/data
+      shell: "tar czf {{ prometheus_backup_gzip_file_path }} {{prometheus_data_dir}}"
       async: 3600
       poll: 10
   always: