diff --git a/stepmania/src/NotesWriterSM.cpp b/stepmania/src/NotesWriterSM.cpp
index 76efa90d42..04fa907f69 100644
--- a/stepmania/src/NotesWriterSM.cpp
+++ b/stepmania/src/NotesWriterSM.cpp
@@ -245,7 +245,7 @@ bool NotesWriterSM::Write( RString sPath, const Song &out, bool bSavingCache )
 		RString sTag = GetSMNotesTag( out, *pSteps, bSavingCache );
 		f.PutLine( sTag );
 	}
-	if( !f.Flush() )
+	if( f.Flush() == -1 )
 		return false;
 
 	return true;