diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index ab529919..04d661dc 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -1658,7 +1658,7 @@ config.defineOptions(VirtualRenderer.prototype, "renderer", {
     },
     fixedWidthGutter: {
         set: function(val) {
-            this.gutterLayer.fixedWidth = !!val;
+            this.$gutterLayer.$fixedWidth = !!val;
             this.$loop.schedule(this.CHANGE_GUTTER);
         }
     }