diff --git a/js/jquery.mobile.js b/js/jquery.mobile.js
index cb643cbf..8435d976 100644
--- a/js/jquery.mobile.js
+++ b/js/jquery.mobile.js
@@ -246,7 +246,7 @@
 			isFormRequest = false,
 			duplicateCachedPage = null,
 			back = (back !== undefined) ? back : ( urlStack.length > 1 && urlStack[ urlStack.length - 2 ].url === url ),
-			transition = transition || $.mobile.defaultTransition;
+			transition = (transition !== undefined) ? transition : $.mobile.defaultTransition;
 		
 		if( $.type(to) === "object" && to.url ){
 			url = to.url,