diff --git a/src/net/java/sip/communicator/util/swing/AuthenticationWindow.java b/src/net/java/sip/communicator/util/swing/AuthenticationWindow.java
index 356616e94..851c1c08c 100644
--- a/src/net/java/sip/communicator/util/swing/AuthenticationWindow.java
+++ b/src/net/java/sip/communicator/util/swing/AuthenticationWindow.java
@@ -105,7 +105,7 @@ public AuthenticationWindow(String server,
                                 boolean isUserNameEditable,
                                 ImageIcon icon)
     {
-        this(null, server, isUserNameEditable, icon);
+        this(new JDialog(), server, isUserNameEditable, icon);
     }
 
     /**