diff --git a/frontend/src/routes/flows/dev/+page.svelte b/frontend/src/routes/flows/dev/+page.svelte
index b545da1156..d80f96ed8b 100644
--- a/frontend/src/routes/flows/dev/+page.svelte
+++ b/frontend/src/routes/flows/dev/+page.svelte
@@ -52,7 +52,7 @@
 	}
 
 	let darkModeToggle: DarkModeToggle | undefined = $state()
-	let darkMode: boolean | undefined = $state(undefined)
+	let darkMode: boolean = $state(document.documentElement.classList.contains('dark'))
 	let modeInitialized = $state(false)
 	function initializeMode() {
 		modeInitialized = true