diff --git a/packages/svelte/src/internal/client/reactivity/effects.js b/packages/svelte/src/internal/client/reactivity/effects.js
index 49b02eb142..f5ab407305 100644
--- a/packages/svelte/src/internal/client/reactivity/effects.js
+++ b/packages/svelte/src/internal/client/reactivity/effects.js
@@ -423,7 +423,7 @@ function get_last_node(effect) {
 		return get_last_node(effect.last);
 	}
 
-	return null;
+	return /** @type {import('#client').TemplateNode} */ (/** @type {unknown} */ (null));
 }
 
 /**