diff --git a/inventory/host_vars/frederica.dmz.mateu.be.yml b/inventory/host_vars/frederica.dmz.mateu.be.yml
index 11c80b0..2102ff3 100644
--- a/inventory/host_vars/frederica.dmz.mateu.be.yml
+++ b/inventory/host_vars/frederica.dmz.mateu.be.yml
@@ -14,5 +14,5 @@ restic_aws_secret_access_key: !vault |
           3161616531313439320a613265633632353032386337356161373835336634666138393437313634
           39386366363739313030353039363338373631306536633162616136666533306132346363653863
           3133636565626436346139633065343766386564653162323663
-restic_s3_url: "https://s3.sbg.io.cloud.ovh.net/backup-libertus"
+restic_s3_url: "s3:https://s3.sbg.io.cloud.ovh.net/backup-libertus"
 restic_backup_retention: "--max-unused 1% -d 4 -w 3 -m 2"