diff --git a/jquery.binding.js b/jquery.binding.js
index 16d7729..e81bfd0 100644
--- a/jquery.binding.js
+++ b/jquery.binding.js
@@ -46,8 +46,8 @@
 					sortable.destroy();
 					$el.removeData('sortable');
 				}
-				else if (options in sortable) {
-					retVal = sortable[sortable].apply(sortable, [].slice.call(arguments, 1));
+				else if (typeof sortable[options] === 'function') {
+					retVal = sortable[options].apply(sortable, [].slice.call(arguments, 1));
 				}
 			}
 		});