diff --git a/stepmania/src/GameState.cpp b/stepmania/src/GameState.cpp
index 808162e50a..992ecf617e 100644
--- a/stepmania/src/GameState.cpp
+++ b/stepmania/src/GameState.cpp
@@ -1604,6 +1604,7 @@ bool PlayerIsUsingModifier( PlayerNumber pn, const CString sModifier )
 #include "LuaFunctions.h"
 LuaFunction_PlayerNumber( IsPlayerEnabled,	GAMESTATE->IsPlayerEnabled(pn) )
 LuaFunction_PlayerNumber( IsHumanPlayer,	GAMESTATE->IsHumanPlayer(pn) )
+LuaFunction_PlayerNumber( IsWinner,			GAMESTATE->GetStageResult(pn)==RESULT_WIN )
 LuaFunction_NoArgs( IsCourseMode,			GAMESTATE->IsCourseMode() )
 LuaFunction_NoArgs( IsDemonstration,		GAMESTATE->m_bDemonstrationOrJukebox )
 LuaFunction_NoArgs( StageIndex,				GAMESTATE->GetStageIndex() )