diff --git a/packaging/flatpak/org.wesnoth.Wesnoth.json b/packaging/flatpak/org.wesnoth.Wesnoth.json
index 1766f3f6d13..da880fdf83e 100644
--- a/packaging/flatpak/org.wesnoth.Wesnoth.json
+++ b/packaging/flatpak/org.wesnoth.Wesnoth.json
@@ -40,6 +40,7 @@
 	{
             "name": "scons",
             "buildsystem": "simple",
+            "cleanup": [ "*" ],
             "sources": [
                 {
                     "type": "archive",