diff --git a/src/js/controller/read.js b/src/js/controller/read.js
index e3e004e..b5f90d2 100644
--- a/src/js/controller/read.js
+++ b/src/js/controller/read.js
@@ -50,8 +50,7 @@ define(function(require) {
             });
         };
 
-        $scope.$watch('state.mailList.selected', function() {
-            var mail = $scope.state.mailList.selected;
+        $scope.$watch('state.mailList.selected', function(mail) {
             if (!mail) {
                 return;
             }