diff --git a/src/net/java/sip/communicator/impl/gui/main/chat/conference/InvitationReceivedDialog.java b/src/net/java/sip/communicator/impl/gui/main/chat/conference/InvitationReceivedDialog.java
index de2cede67..f9a00c34b 100644
--- a/src/net/java/sip/communicator/impl/gui/main/chat/conference/InvitationReceivedDialog.java
+++ b/src/net/java/sip/communicator/impl/gui/main/chat/conference/InvitationReceivedDialog.java
@@ -251,6 +251,7 @@ public void initGUI()
         this.mainPanel.setOpaque(false);
 
         this.getContentPane().add(mainPanel);
+        this.pack();
     }
 
     /**