diff --git a/src/tabs/programming.css b/src/tabs/programming.css
index 3b610f7e..9a8fc23b 100644
--- a/src/tabs/programming.css
+++ b/src/tabs/programming.css
@@ -97,5 +97,5 @@ code {
 }
 
 .cm-highlightSpace {
-  opacity: 0.2;
+  opacity: 0.4;
 }
\ No newline at end of file