diff --git a/lib/challenge/preact/js/app.jsx b/lib/challenge/preact/js/app.jsx
index f1321b86..4aafae99 100644
--- a/lib/challenge/preact/js/app.jsx
+++ b/lib/challenge/preact/js/app.jsx
@@ -32,7 +32,7 @@ const App = () => {
   useEffect(() => {
     const timer = setTimeout(() => {
       setPassed(true);
-    }, state.difficulty * 100);
+    }, state.difficulty * 125);
 
     return () => clearTimeout(timer);
   }, [challenge]);