diff --git a/scripts/backup b/scripts/backup
index 10a9c9c..f0c4772 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -7,7 +7,7 @@ set -eu
 backup_dir=$1
 
 # The parameter $2 is theid of the app instance
-app=$2
+app=$YNH_APP_INSTANCE_NAME
 
 # Source app helpers
 source /usr/share/yunohost/helpers
diff --git a/scripts/restore b/scripts/restore
index 0a4287d..5c83796 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -8,7 +8,7 @@ set -eu
 backup_dir=$1
 
 # The parameter $2 is the id of the app instance ex: ynhexample__2
-app=$2
+app=$YNH_APP_INSTANCE_NAME
 
 # Source app helpers
 source /usr/share/yunohost/helpers