diff --git a/closure/goog/testing/functionmock.js b/closure/goog/testing/functionmock.js
index <HASH>..<HASH> 100644
--- a/closure/goog/testing/functionmock.js
+++ b/closure/goog/testing/functionmock.js
@@ -152,7 +152,6 @@ goog.testing.createConstructorMock = function(scope, constructorName,
   // Copy class members from the real constructor to the mock. Do not copy
   // the closure superClass_ property (see goog.inherits), the built-in
   // prototype property, or properties added to Function.prototype
-  // (see goog.MODIFY_FUNCTION_PROTOTYPES in closure/base.js).
   for (var property in realConstructor) {
     if (property != 'superClass_' &&
         property != 'prototype' &&
Remove references to now useless @define value goog.MODIFY_FUNCTION_PROTOTYPES in preparation for removing it entirely.
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Created by MOE: <URL>