diff --git a/scripts/backup b/scripts/backup
index 6a6c158..9e7186a 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -2,6 +2,8 @@
 
 # Exit on command errors and treat unset variables as an error
 set -eu
+# Source app helpers
+source /usr/share/yunohost/helpers
 
 # Récupère les infos de l'application.
 app=$YNH_APP_INSTANCE_NAME