diff --git a/src/NotesLoaderBMS.cpp b/src/NotesLoaderBMS.cpp
index b87a603042..3f0f2fb394 100644
--- a/src/NotesLoaderBMS.cpp
+++ b/src/NotesLoaderBMS.cpp
@@ -1183,14 +1183,17 @@ bool BMSLoader::LoadFromDir( const RString &sDir, Song &out )
 		Steps* pNewNotes = apSteps[i];
 		const bool ok = LoadFromBMSFile( out.GetSongDir() + arrayBMSFileNames[i], aBMSData[i], *pNewNotes, out, mapFilenameToKeysoundIndex );
 		if( ok )
+		{
+			// set song's timing data to the main file.
+			if( i == iMainDataIndex )
+				out.m_SongTiming = pNewNotes->m_Timing;
+				
 			out.AddSteps( pNewNotes );
+		}
 		else
 			delete pNewNotes;
 	}
 
-	// set song's timing data to the main file.
-	out.m_SongTiming = apSteps[iMainDataIndex]->m_Timing;
-
 	SlideDuplicateDifficulties( out );
 
 	ConvertString( out.m_sMainTitle, "utf-8,japanese" );