diff --git a/webui/src/web-components/theme-service.ts b/webui/src/web-components/theme-service.ts
index f002572..c4bccfe 100644
--- a/webui/src/web-components/theme-service.ts
+++ b/webui/src/web-components/theme-service.ts
@@ -84,7 +84,7 @@
     if (saved === "light" || saved === "dark") {
       return saved;
     }
-    return "system";
+    return "light"; // TODO: default to "system", once dark mode is ready.
   }
 
   /**