diff --git a/build/tasks/build.js b/build/tasks/build.js
index 79c7860e1..93c47c0ff 100644
--- a/build/tasks/build.js
+++ b/build/tasks/build.js
@@ -62,6 +62,14 @@ module.exports = function( grunt ) {
 				.replace( /define\([^{]*?{/, "" )
 				.replace( rdefineEnd, "" );
 
+			// Remove CommonJS-style require calls
+			// Keep an ending semicolon
+			contents = contents
+				.replace( /\w+ = require\(\s*(")[\w\.\/]+\1\s*\)([,;])/g,
+					function( all, quote, commaSemicolon ) {
+						return commaSemicolon === ";" ? ";" : "";
+					});
+
 			// Remove empty definitions
 			contents = contents
 				.replace( /define\(\[[^\]]+\]\)[\W\n]+$/, "" );
diff --git a/src/core.js b/src/core.js
index 62fac0045..b1cca1942 100644
--- a/src/core.js
+++ b/src/core.js
@@ -1,21 +1,18 @@
-define([
-	"./var/strundefined",
-	"./var/deletedIds",
-	"./var/slice",
-	"./var/concat",
-	"./var/push",
-	"./var/indexOf",
-	// [[Class]] -> type pairs
-	"./var/class2type",
-	"./var/toString",
-	"./var/hasOwn",
-	"./var/trim",
-	"./var/rsingleTag",
-	"./var/support"
-], function( strundefined, deletedIds, slice, concat, push, indexOf,
-	class2type, toString, hasOwn, trim, rsingleTag, support ) {
+define(function( require ) {
 
 var
+	deletedIds = require( "./var/deletedIds" ),
+	slice = require( "./var/slice" ),
+	concat = require( "./var/concat" ),
+	push = require( "./var/push" ),
+	indexOf = require( "./var/indexOf" ),
+	class2type = require( "./var/class2type" ),
+	toString = require( "./var/toString" ),
+	hasOwn = require( "./var/hasOwn" ),
+	trim = require( "./var/trim" ),
+	rsingleTag = require( "./var/rsingleTag" ),
+	support = require( "./var/support" ),
+
 	i,
 
 	// A central reference to the root jQuery(document)
diff --git a/src/var/class2type.js b/src/var/class2type.js
index 52f2d38a6..e674c3ba6 100644
--- a/src/var/class2type.js
+++ b/src/var/class2type.js
@@ -1,3 +1,4 @@
 define(function() {
+	// [[Class]] -> type pairs
 	return {};
 });