diff --git a/lib/ace/mouse/default_handlers.js b/lib/ace/mouse/default_handlers.js
index d0c795d1..ebe9e0c7 100644
--- a/lib/ace/mouse/default_handlers.js
+++ b/lib/ace/mouse/default_handlers.js
@@ -118,8 +118,8 @@ function DefaultHandlers(mouseHandler) {
                 editor.selection.clearSelection();
             }
         }.bind(this), 0);
-        if (editor.renderer.content.setCapture) {
-            editor.renderer.content.setCapture();
+        if (editor.renderer.scroller.setCapture) {
+            editor.renderer.scroller.setCapture();
         }
         editor.setStyle("ace_selecting");
         this.setState("select");
@@ -185,8 +185,8 @@ function DefaultHandlers(mouseHandler) {
     this.selectByWordsEnd =
     this.selectByLinesEnd = function() {
         this.editor.unsetStyle("ace_selecting");
-        if (this.editor.renderer.content.releaseCapture) {
-            this.editor.renderer.content.releaseCapture();
+        if (this.editor.renderer.scroller.releaseCapture) {
+            this.editor.renderer.scroller.releaseCapture();
         }
     };
 
diff --git a/lib/ace/test/mockrenderer.js b/lib/ace/test/mockrenderer.js
index e22104a7..73992111 100644
--- a/lib/ace/test/mockrenderer.js
+++ b/lib/ace/test/mockrenderer.js
@@ -33,6 +33,7 @@ define(function(require, exports, module) {
 
 var MockRenderer = exports.MockRenderer = function(visibleRowCount) {
     this.container = document.createElement("div");
+    this.scroller = document.createElement("div");
     this.visibleRowCount = visibleRowCount || 20;
 
     this.layerConfig = {