diff --git a/scripts/upgrade b/scripts/upgrade
index 1681c11..7fc0c50 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -31,6 +31,7 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
 
 	# Download, check integrity, uncompress and patch the source from app.src
+	# Keep the .env and the database folder
 	ynh_setup_source --dest_dir="$install_dir" --keep=".env database"
 fi