diff --git a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
index 6ae70cc6..d0b967f5 100644
--- a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
+++ b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.cpp
@@ -22,7 +22,7 @@
 #include "mymessagedialogimpl.h"
 
 gameLobbyDialogImpl::gameLobbyDialogImpl(startWindowImpl *parent, ConfigFile *c)
- : QDialog(parent), myW(NULL), myStartWindow(parent), myConfig(c), currentGameName(""), myPlayerId(0), myCurrentGameId(0), isGameAdministrator(false), inGame(false), guestMode(false), blinkingButtonAnimationState(true), myChat(NULL), keyUpCounter(0), infoMsgToShowId(0), currentInvitationGameId(0)
+ : QDialog(parent), myW(NULL), myStartWindow(parent), myConfig(c), currentGameName(""), myPlayerId(0), myCurrentGameId(0), isGameAdministrator(false), inGame(false), guestMode(false), blinkingButtonAnimationState(true), myChat(NULL), keyUpCounter(0), infoMsgToShowId(0), currentInvitationGameId(0), inviteDialogIsCurrentlyShown(false)
 {
 
 #ifdef __APPLE__
@@ -1344,14 +1344,23 @@ void gameLobbyDialogImpl::showInfoMsgBox()
 
 void gameLobbyDialogImpl::showInvitationDialog(unsigned gameId, unsigned playerIdFrom)
 {
+    if(!inviteDialogIsCurrentlyShown) {
 
-     myMessageDialogImpl dialog(myConfig, this);
-     if(dialog.exec(3, tr("You've been invited to the game <b>%1</b> by <b>%2</b>.<br>Do you want to join this game?").arg(QString::fromUtf8(mySession->getClientGameInfo(gameId).name.c_str())).arg(QString::fromUtf8(mySession->getClientPlayerInfo(playerIdFrom).playerName.c_str())), tr("PokerTH - Info Message"), QPixmap(":/gfx/list_add_user_64.png"), QDialogButtonBox::Yes|QDialogButtonBox::No, false)) {
+        inviteDialogIsCurrentlyShown = true;
 
-        mySession->acceptGameInvitation(currentInvitationGameId);
+         myMessageDialogImpl dialog(myConfig, this);
+         if(dialog.exec(3, tr("You've been invited to the game <b>%1</b> by <b>%2</b>.<br>Do you want to join this game?").arg(QString::fromUtf8(mySession->getClientGameInfo(gameId).name.c_str())).arg(QString::fromUtf8(mySession->getClientPlayerInfo(playerIdFrom).playerName.c_str())), tr("PokerTH - Info Message"), QPixmap(":/gfx/list_add_user_64.png"), QDialogButtonBox::Yes|QDialogButtonBox::No, false)) {
+
+            mySession->acceptGameInvitation(currentInvitationGameId);
+            inviteDialogIsCurrentlyShown = false;
+        }
+        else {
+            mySession->rejectGameInvitation(currentInvitationGameId, DENY_GAME_INVITATION_NO);
+            inviteDialogIsCurrentlyShown = false;
+        }
     }
     else {
-        mySession->rejectGameInvitation(currentInvitationGameId, DENY_GAME_INVITATION_NO);
+        mySession->rejectGameInvitation(currentInvitationGameId, DENY_GAME_INVITATION_BUSY);
     }
 }
 
diff --git a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.h b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.h
index ca61d0a3..346fe95d 100644
--- a/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.h
+++ b/src/gui/qt/gamelobbydialog/gamelobbydialogimpl.h
@@ -143,6 +143,7 @@ private:
         QAction *ignorePlayerAction;
         int infoMsgToShowId;
         int currentInvitationGameId;
+        bool inviteDialogIsCurrentlyShown;
 	
 
  protected: