diff --git a/src/components/SiteLoader.tsx b/src/components/SiteLoader.tsx
index 8ca9e2c..7575a3b 100644
--- a/src/components/SiteLoader.tsx
+++ b/src/components/SiteLoader.tsx
@@ -86,7 +86,7 @@ export function SiteLoader() {
 
   useEffect(() => {
     let cancelled = false;
-    let exitTimer: ReturnType<typeof window.setTimeout> | undefined;
+    let exitTimer: number | undefined;
     const startedAt = performance.now();
 
     document.documentElement.dataset.siteLoading = 'true';
@@ -133,7 +133,7 @@ export function SiteLoader() {
 
     return () => {
       cancelled = true;
-      if (exitTimer) window.clearTimeout(exitTimer);
+      if (exitTimer !== undefined) window.clearTimeout(exitTimer);
     };
   }, []);