diff --git a/src/lib/HeardleGame.svelte b/src/lib/HeardleGame.svelte
index 2d4db08..41f39eb 100644
--- a/src/lib/HeardleGame.svelte
+++ b/src/lib/HeardleGame.svelte
@@ -1,3 +1,8 @@
+<script context="module">
+	// disable SSR so that darkMode is determined in the browser before first render
+	export const ssr = false;
+</script>
+
 <script lang="ts">
 	import { onMount, onDestroy } from 'svelte';
 	import moment from 'moment';