diff --git a/code/ryzom/client/src/interface_v3/action_handler_game.cpp b/code/ryzom/client/src/interface_v3/action_handler_game.cpp
index 36f289959..ab3facd0b 100644
--- a/code/ryzom/client/src/interface_v3/action_handler_game.cpp
+++ b/code/ryzom/client/src/interface_v3/action_handler_game.cpp
@@ -3134,7 +3134,7 @@ class CHandlerGameConfigFullscreen : public IActionHandler
 	virtual void execute (CCtrlBase *pCaller, const string &/* Params */)
 	{
 		CInterfaceManager *pIM = CInterfaceManager::getInstance();
-		bool bFullscreen;
+		bool bFullscreen = false;
 		{
 			CCtrlBaseButton *pBut = dynamic_cast<CCtrlBaseButton*>(pIM->getElementFromId( GAME_CONFIG_VIDEO_FULLSCREEN_BUTTON ));
 			if (pBut) bFullscreen = pBut->getPushed();