diff --git a/lib/ace/theme/textmate.js b/lib/ace/theme/textmate.js
index dc6abd03..2c43c9dd 100644
--- a/lib/ace/theme/textmate.js
+++ b/lib/ace/theme/textmate.js
@@ -50,7 +50,6 @@ define(function(require, exports, module) {
 .ace-tm .ace_gutter {\
   width: 50px;\
   background: #e8e8e8;\
-  border-right: 1px solid rgb(159, 159, 159);	 \
   color: #333;\
   overflow : hidden;\
 }\