diff --git a/app/views/issues/index.html.erb b/app/views/issues/index.html.erb
index c1c3ab957..6e89e5e10 100644
--- a/app/views/issues/index.html.erb
+++ b/app/views/issues/index.html.erb
@@ -40,7 +40,7 @@
 
           <div id="filter_form" class="fr" >
             <%= select( :issue,:user_id, @project.members.order("lower(users.login)").map{|c| [c.name, c.user_id]}.unshift(["指派给",0]),
-                        { :include_blank => false,:selected=>@assign_to_id.nil? ? @assign_to_id : 0
+                        { :include_blank => false,:selected=>@assign_to_id ? @assign_to_id : 0
                         },
                         {:onchange=>"remote_function();",:id=>"assigned_to_id",:name=>"v[assigned_to_id]",:class=>"w90"}
                 )