diff --git a/src/core.js b/src/core.js
index ebad0c1b6..3f6c1f75a 100644
--- a/src/core.js
+++ b/src/core.js
@@ -627,9 +627,7 @@ jQuery.extend({
 
 	// Evalulates a script in a global context
 	globalEval: function( data ) {
-		data = jQuery.trim( data );
-
-		if ( data ) {
+		if ( data && /\S/.test(data) ) {
 			// Inspired by code by Andrea Giammarchi
 			// http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
 			var head = document.getElementsByTagName("head")[0] || document.documentElement,