diff --git a/tabs/pid_tuning.css b/tabs/pid_tuning.css
index f0c560f9..ae8f402a 100644
--- a/tabs/pid_tuning.css
+++ b/tabs/pid_tuning.css
@@ -259,7 +259,7 @@
     background-position: 95% 20%;
     background-size: 430px;
     height: 174px;
-    opacity: 0.25;
+    opacity: 0.15;
 }