diff --git a/stepmania/src/StepMania.h b/stepmania/src/StepMania.h
index fbe3ba235c..3d8f7f0775 100644
--- a/stepmania/src/StepMania.h
+++ b/stepmania/src/StepMania.h
@@ -11,6 +11,7 @@ void ResetGame( bool ReturnToFirstScreen=true );
 void ReadGamePrefsFromDisk( bool bSwitchToLastPlayedGame=true );
 void SaveGamePrefsToDisk();
 void ChangeCurrentGame( Game g );
+void FocusChanged( bool bHasFocus );
 
 // If successful, return filename of screenshot in sDir, else return ""
 CString SaveScreenshot( CString sDir, bool bSaveCompressed, bool bMakeSignature, int iIndex = -1 );