diff --git a/app/assets/stylesheets/common/foundation/base.scss b/app/assets/stylesheets/common/foundation/base.scss
index b4267e703fe..2a3c5588d02 100644
--- a/app/assets/stylesheets/common/foundation/base.scss
+++ b/app/assets/stylesheets/common/foundation/base.scss
@@ -85,6 +85,7 @@ fieldset {
 
 pre code {
   overflow: auto;
+  tab-size: 4;
 }
 
 // TODO figure out a clean place to put stuff like this