diff --git a/scripts/backup b/scripts/backup
index 4b7a6c6..de4bc01 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -4,7 +4,7 @@
 set -e
 
 # Source YNH helpers
-. /usr/share/yunohost/helpers
+source /usr/share/yunohost/helpers
 
 app="jappix"