diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index fab452a3..369e7ddd 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -821,7 +821,7 @@ var VirtualRenderer = function(container, theme) {
             if (_self.$theme)
                 dom.addCssClass(_self.container, _self.$theme);
 
-            if(theme && theme.isDark)
+            if (theme && theme.isDark)
                 dom.addCssClass(_self.container, "ace_dark");
             else
                 dom.removeCssClass(_self.container, "ace_dark");