diff --git a/lib/ace/anchor.js b/lib/ace/anchor.js
index 4511a4ce..3431b3c4 100644
--- a/lib/ace/anchor.js
+++ b/lib/ace/anchor.js
@@ -101,6 +101,12 @@ var Anchor = exports.Anchor = function(doc, row, column) {
      **/
     this.onChange = function(e) {
         var delta = e.data;
+        if (delta.start.row == delta.end.row && delta.start.row != this.row)
+            return;
+
+        if (delta.start.row > this.row)
+            return;
+            
         var point = this.$getTransformedPoint(delta, {row: this.row, column: this.column});
         this.setPosition(point.row, point.column, true);
     };