diff --git a/scripts/upgrade b/scripts/upgrade
index 672032d..f6f9e4a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -23,6 +23,7 @@ upgrade_type=$(ynh_check_app_version_changed)
 # Remove trailing "/" for next commands
 path=${path%/}
 
+# Retreive sources and install them
 src_path=/var/www/$app
 sudo rm -rf $src_path
 sudo mkdir -p $src_path