diff --git a/scripts/_common.sh b/scripts/_common.sh
index ae5c29d..3e5074d 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -50,7 +50,7 @@ ynh_install_apps() {
     for one_app_and_its_args in "${apps_list[@]}"
     do
         # Retrieve the name of the app (part before ?)
-        local one_app=$(cut -d "?" -f1 <<< "$str")
+        local one_app=$(cut -d "?" -f1 <<< "$one_app_and_its_args")
         [ -z "$one_app" ] && ynh_die --message="You didn't provided a YunoHost app to install"
 
         yunohost tools update apps