diff --git a/core/renderers/thrasos/info.js b/core/renderers/thrasos/info.js
index 480822231..f5e95e04c 100644
--- a/core/renderers/thrasos/info.js
+++ b/core/renderers/thrasos/info.js
@@ -17,6 +17,7 @@ goog.provide('Blockly.thrasos.RenderInfo');
 goog.require('Blockly.blockRendering.BottomRow');
 goog.require('Blockly.blockRendering.ExternalValueInput');
 goog.require('Blockly.blockRendering.InlineInput');
+goog.require('Blockly.blockRendering.InRowSpacer');
 goog.require('Blockly.blockRendering.InputRow');
 goog.require('Blockly.blockRendering.Measurable');
 goog.require('Blockly.blockRendering.NextConnection');
@@ -30,6 +31,10 @@ goog.require('Blockly.blockRendering.TopRow');
 goog.require('Blockly.blockRendering.Types');
 goog.require('Blockly.utils.object');
 
+goog.requireType('Blockly.blockRendering.Field');
+goog.requireType('Blockly.BlockSvg');
+goog.requireType('Blockly.thrasos.Renderer');
+
 
 /**
  * An object containing all sizing information needed to draw this block.
diff --git a/core/renderers/thrasos/renderer.js b/core/renderers/thrasos/renderer.js
index fae501b1c..9bb9bdd97 100644
--- a/core/renderers/thrasos/renderer.js
+++ b/core/renderers/thrasos/renderer.js
@@ -17,6 +17,9 @@ goog.require('Blockly.blockRendering.Renderer');
 goog.require('Blockly.thrasos.RenderInfo');
 goog.require('Blockly.utils.object');
 
+goog.requireType('Blockly.BlockSvg');
+
+
 /**
  * The thrasos renderer.
  * @param {string} name The renderer name.