diff --git a/website/src/lib/logic/settings.ts b/website/src/lib/logic/settings.ts
index 8e8dff854..ab747c59b 100644
--- a/website/src/lib/logic/settings.ts
+++ b/website/src/lib/logic/settings.ts
@@ -254,7 +254,7 @@ export const settings = {
     previousBasemap: new Setting(
         'previousBasemap',
         defaultBasemap,
-        getLayerValidator(Object.keys(basemaps), defaultBasemap)
+        getLayerValidator(basemaps, defaultBasemap)
     ),
     selectedBasemapTree: new Setting(
         'selectedBasemapTree',