diff --git a/mithril.js b/mithril.js
index f1da83f6..2a0a083d 100644
--- a/mithril.js
+++ b/mithril.js
@@ -614,6 +614,7 @@ var m = (function app(window, undefined) {
 		}
 		//m.route(route, params)
 		else if (type.call(arguments[0]) === STRING) {
+			var oldRoute = currentRoute;
 			currentRoute = arguments[0];
 			var args = arguments[1] || {}
 			var queryIndex = currentRoute.indexOf("?")
@@ -623,7 +624,7 @@ var m = (function app(window, undefined) {
 			var currentPath = queryIndex > -1 ? currentRoute.slice(0, queryIndex) : currentRoute
 			if (querystring) currentRoute = currentPath + (currentPath.indexOf("?") === -1 ? "?" : "&") + querystring;
 
-			var shouldReplaceHistoryEntry = (arguments.length === 3 ? arguments[2] : arguments[1]) === true || currentRoute === arguments[0];
+			var shouldReplaceHistoryEntry = (arguments.length === 3 ? arguments[2] : arguments[1]) === true || oldRoute === arguments[0];
 
 			if (window.history.pushState) {
 				computePostRedrawHook = function() {