diff --git a/scripts/upgrade b/scripts/upgrade
index 21a636b..c61544d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -89,12 +89,15 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
+	ynh_setup_source --dest_dir="$final_path/git_src"
 fi
 
+ynh_secure_remove $final_path/www/install
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
+find $final_path/www -type d -exec chmod 755 {} \;
+find $final_path/www -type f -exec chmod 644 {} \;
 
 #=================================================
 # MYSQL CONFIGURATION