diff --git a/login.php b/login.php
index 2d94dec215..93515b6cfc 100755
--- a/login.php
+++ b/login.php
@@ -71,6 +71,8 @@
         return "<font color=FF0000>" . lang("Bad login or password") . "</font>";
         break;
       case "10":
+        Setcookie("sessionid");
+        Setcookie("kp3");
         return "<font color=FF0000>" . lang("Your session could not be verified.") . "</font>";
         break;
       default:
diff --git a/logout.php b/logout.php
index 914636c933..0c4f634e81 100755
--- a/logout.php
+++ b/logout.php
@@ -56,6 +56,8 @@
     }
     $phpgw->session->destroy();
   }
+  Setcookie("sessionid");
+  Setcookie("kp3");
 
   Header("Location: " . $phpgw_info["server"]["webserver_url"] . "/login.php?cd=1");
 ?>
\ No newline at end of file