diff --git a/resources/css/vendors/codemirror.css b/resources/css/vendors/codemirror.css
index e36f5f63832..e14aa267ed5 100644
--- a/resources/css/vendors/codemirror.css
+++ b/resources/css/vendors/codemirror.css
@@ -270,8 +270,6 @@
 
   .CodeMirror-widget {}
 
-  .CodeMirror-rtl pre { direction: ltr; }
-
   .CodeMirror-code {
     outline: none;
   }