diff --git a/stepmania/src/RageFileDriver.h b/stepmania/src/RageFileDriver.h
index ea6747d1b2..379cd6c9f2 100644
--- a/stepmania/src/RageFileDriver.h
+++ b/stepmania/src/RageFileDriver.h
@@ -15,6 +15,7 @@ public:
 	virtual int GetFileModTime( CString sPath ) = 0;
 	virtual int GetPathValue( CString path );
 	virtual bool Ready() { return true; } /* see RageFileManager::MountpointIsReady */
+	virtual void FlushDirCache( const CString &sPath ) { }
 };
 
 class RageFileObj