diff --git a/packages/web/lib/hooks/useScrollWatcher.tsx b/packages/web/lib/hooks/useScrollWatcher.tsx
index af47493f3..619625aca 100644
--- a/packages/web/lib/hooks/useScrollWatcher.tsx
+++ b/packages/web/lib/hooks/useScrollWatcher.tsx
@@ -40,6 +40,7 @@ export function useScrollWatcher(effect: Effect, delay: number): void {
     return () => {
       if (throttleTimeout.current) {
         clearTimeout(throttleTimeout.current)
+        throttleTimeout.current = undefined
       }
       window.removeEventListener('scroll', handleScroll)
     }