diff --git a/scripts/upgrade b/scripts/upgrade
index caf3e4b..932f37f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -59,6 +59,11 @@ if [ -z "$final_path" ]; then
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
+# If lang exist, remove it
+if [ -v "$lang" ]; then
+	ynh_app_setting_delete --app=$app --key=$lang
+fi
+
 # If language doesn't exist, create it
 if [ -z "$language" ]; then
 	language="en"