diff --git a/core/block.js b/core/block.js
index e5b44d7dd..ae34618c0 100644
--- a/core/block.js
+++ b/core/block.js
@@ -26,7 +26,6 @@
 
 goog.provide('Blockly.Block');
 
-goog.require('Blockly.Instrument'); // lyn's instrumentation code
 goog.require('Blockly.Blocks');
 goog.require('Blockly.Comment');
 goog.require('Blockly.Connection');
diff --git a/core/blockly.js b/core/blockly.js
index 1f2f06e5e..3ec37d56a 100644
--- a/core/blockly.js
+++ b/core/blockly.js
@@ -43,7 +43,7 @@ goog.require('Blockly.FieldVariable');
 goog.require('Blockly.Generator');
 goog.require('Blockly.Msg');
 goog.require('Blockly.Procedures');
-goog.require('Blockly.Toolbox');
+//goog.require('Blockly.Toolbox');
 goog.require('Blockly.WidgetDiv');
 goog.require('Blockly.WorkspaceSvg');
 goog.require('Blockly.constants');