diff --git a/js/jQuery.mobile.js b/js/jQuery.mobile.js
index 38cdd860..d333a3f2 100644
--- a/js/jQuery.mobile.js
+++ b/js/jQuery.mobile.js
@@ -7,6 +7,11 @@
  * http://jquery.org/license
  */
 (function( $, window, undefined ) {
+	// if we're missing support for any of these, then we're a C-grade browser
+	if ( !$.support.display || !$.support.position || !$.support.overflow || !$.support.floatclear ) {
+		return;
+	}	
+
 	var $window = $(window),
 		$html = $('html'),
 		$head = $('head'),
diff --git a/js/jQuery.mobile.support.js b/js/jQuery.mobile.support.js
index e013375b..36257086 100644
--- a/js/jQuery.mobile.support.js
+++ b/js/jQuery.mobile.support.js
@@ -45,7 +45,4 @@ $.extend( $.support, {
 	fakeBody.remove();
 })();
 
-// if we're missing support for any of these, then we're a C-grade browser
-if ( !$.support.display || !$.support.position || !$.support.overflow || !$.support.floatclear ) {
-	return;
-}
+