diff --git a/stylesheets/partials/_syntax.sass b/stylesheets/partials/_syntax.sass
index ee22a1d..633a496 100644
--- a/stylesheets/partials/_syntax.sass
+++ b/stylesheets/partials/_syntax.sass
@@ -5,6 +5,7 @@ pre
   line-height: 1.5em
   border: #aaa 1px solid
   overflow-x: auto
+  overflow-y: hidden
   padding: 25px 20px
   .lineno
     color: #888