diff --git a/client/src/components/world_tree.tsx b/client/src/components/world_tree.tsx
index 13619bf1..68168f30 100644
--- a/client/src/components/world_tree.tsx
+++ b/client/src/components/world_tree.tsx
@@ -213,7 +213,7 @@ export function WorldSelectionMenu({rulesHelp, setRulesHelp}) {
         title="Game Rules"
         min={0} max={2}
         aria-label="Game Rules"
-        defaultValue={difficulty}
+        value={difficulty}
         marks={[
           {value: 0, label: label(0)},
           {value: 1, label: label(1)},