diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index 6cb3ddc3..692e1084 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -798,7 +798,7 @@ var VirtualRenderer = function(container, theme) {
             this.$markerBack.update(this.layerConfig);
         }
 
-        if (changes & this.CHANGE_SIZE) {
+        if (changes & this.CHANGE_SIZE || changes & this.CHANGE_LINES) {
             this.$updateScrollBarV();
             this.$updateScrollBarH();
         }