diff --git a/cmd/tools/fast/fast_main.js b/cmd/tools/fast/fast_main.js
index 752b0ce539..d6b2d19461 100644
--- a/cmd/tools/fast/fast_main.js
+++ b/cmd/tools/fast/fast_main.js
@@ -1,4 +1,4 @@
-const delta = 20;
+const delta = 18;
 
 (function () {
     var table = document.querySelector("table");