diff --git a/js/jquery.mobile.support.js b/js/jquery.mobile.support.js
index 40655526..d3ecdcbe 100644
--- a/js/jquery.mobile.support.js
+++ b/js/jquery.mobile.support.js
@@ -19,7 +19,7 @@ function propExists( prop ){
 	var uc_prop = prop.charAt(0).toUpperCase() + prop.substr(1),
 		props   = (prop + ' ' + vendors.join(uc_prop + ' ') + uc_prop).split(' ');
 	for(var v in props){
-		if( fbCSS[ v ] !== undefined ){
+		if( fbCSS[ props[v] ] !== undefined ){
 			return true;
 		}
 	}