diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index d5662ca6..6b0d467d 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -239,7 +239,10 @@ var VirtualRenderer = function(container, theme) {
             if (this.$changedLines.lastRow < lastRow)
                 this.$changedLines.lastRow = lastRow;
         }
-
+        
+        if (this.$changedLines.firstRow > this.layerConfig.lastRow ||
+            this.$changedLines.lastRow < this.layerConfig.firstRow)
+            return;
         this.$loop.schedule(this.CHANGE_LINES);
     };