diff --git a/stepmania/src/RageUtil_FileDB.cpp b/stepmania/src/RageUtil_FileDB.cpp
index b72e820518..fd18ec0a87 100644
--- a/stepmania/src/RageUtil_FileDB.cpp
+++ b/stepmania/src/RageUtil_FileDB.cpp
@@ -260,23 +260,18 @@ FileSet *FilenameDB::GetFileSet( CString dir, bool create )
 	else
 	{
 		ret = new FileSet;
-		AddFileSet( dir, ret );
+
+		map<CString, FileSet *>::iterator it = dirs.find( lower );
+		if( it != dirs.end() )
+			delete it->second;
+
+		dirs[lower] = ret;
 	}
 
 	PopulateFileSet( *ret, dir );
 	return ret;
 }
 
-void FilenameDB::AddFileSet( CString sPath, FileSet *fs )
-{
-	sPath.MakeLower();
-	map<CString, FileSet *>::iterator it = dirs.find( sPath );
-	if( it != dirs.end() )
-		delete it->second;
-
-	dirs[sPath] = fs;
-}
-
 /* Add the file or directory "sPath".  sPath is a directory if it ends with
  * a slash. */
 void FilenameDB::AddFile( const CString &sPath, int size, int hash, void *priv )
diff --git a/stepmania/src/RageUtil_FileDB.h b/stepmania/src/RageUtil_FileDB.h
index e76ed65b59..25507bb176 100644
--- a/stepmania/src/RageUtil_FileDB.h
+++ b/stepmania/src/RageUtil_FileDB.h
@@ -80,7 +80,6 @@ protected:
 	void GetFilesMatching(const CString &dir, 
 		const CString &beginning, const CString &containing, const CString &ending, 
 		vector<CString> &out, bool bOnlyDirs);
-	void AddFileSet( CString sPath, FileSet *fs );
 	void DelFileSet( map<CString, FileSet *>::iterator dir );
 
 	/* The given path wasn't cached.  Cache it. */