diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index a4c3906b..363f3cd8 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -1072,12 +1072,12 @@ var VirtualRenderer = function(container, theme) {
                     // trick session to think it's already scrolled to not loose toValue
                     _self.session.$scrollTop = toValue;
                 } else {
-                    this.$inScrollAnimation = false;
+                    _self.$inScrollAnimation = false;
                     clearInterval(_self.$timer);
                     
                     _self.session.$scrollTop = -1;
                     _self.session.setScrollTop(toValue);
-                     callback &&  callback();
+                    callback && callback();
                 }
             }, 10);
         }