diff --git a/src/DotRecast.Recast.Demo/RecastDemo.cs b/src/DotRecast.Recast.Demo/RecastDemo.cs
index f3e446e..33d28e6 100644
--- a/src/DotRecast.Recast.Demo/RecastDemo.cs
+++ b/src/DotRecast.Recast.Demo/RecastDemo.cs
@@ -525,7 +525,7 @@ public class RecastDemo
             timeAcc -= DELTA_TIME;
             if (simIter < 5 && sample != null)
             {
-                toolsUI.handleUpdate((float)dt);
+                toolsUI.handleUpdate(DELTA_TIME);
             }
 
             simIter++;