diff --git a/README.md b/README.md
index 8e6942d..f3420ba 100644
--- a/README.md
+++ b/README.md
@@ -378,33 +378,33 @@ class LinqXmlSerialization {
     + boolean ExistsInfoTitleByUrl(string url)
 }
 
-Album --> "+ artist" Artist
-Album --> "- titles*" Title
-Playlist --> "- titles*" Title
+Album o-- "+ artist" Artist
+Album o-- "- titles*" Title
+Playlist o-- "- titles*" Title
 CustomTitle <|-- Title
 InfoTitle <|-- Title
-InfoTitle --> "+ genre" Genre
-InfoTitle --> "+ artist" Artist
-Manager --> "+ datamanager" IDataManager
-StubArtist --> "- artists*" Artist
-StubAlbum --> "- stubArtist" StubArtist
-StubAlbum --> "- albums*" Album
-StubCustomTitle --> "- customTitles*" CustomTitle
-StubInfoTitle --> "- stubArtist" StubArtist
-StubInfoTitle --> "- infoTitles*" InfoTitle
-StubPlaylist --> "- playlists*" Playlist
+InfoTitle o-- "+ genre" Genre
+InfoTitle o-- "+ artist" Artist
+Manager *-- "+ datamanager" IDataManager
+StubArtist *-- "- artists*" Artist
+StubAlbum *-- "- stubArtist" StubArtist
+StubAlbum *-- "- albums*" Album
+StubCustomTitle *-- "- customTitles*" CustomTitle
+StubInfoTitle *-- "- stubArtist" StubArtist
+StubInfoTitle *-- "- infoTitles*" InfoTitle
+StubPlaylist *-- "- playlists*" Playlist
 StubManager <|-- IDataManager
-StubManager --> "- stubArtist" StubArtist
-StubManager --> "- stubPlaylist" StubPlaylist
-StubManager --> "- stubAlbum" StubAlbum
-StubManager --> "- stubInfoTitle" StubInfoTitle
-StubManager --> "- stubCustomTitle" StubCustomTitle
+StubManager *-- "- stubArtist" StubArtist
+StubManager *-- "- stubPlaylist" StubPlaylist
+StubManager *-- "- stubAlbum" StubAlbum
+StubManager *-- "- stubInfoTitle" StubInfoTitle
+StubManager *-- "- stubCustomTitle" StubCustomTitle
 LinqXmlSerialization <|-- IDataManager
-LinqXmlSerialization --> "- artists*" Artist
-LinqXmlSerialization --> "- albums*" Album
-LinqXmlSerialization --> "- playlists*" Playlist
-LinqXmlSerialization --> "- infotitles*" InfoTitle
-LinqXmlSerialization --> "- customtitles*" CustomTitle
+LinqXmlSerialization o-- "- artists*" Artist
+LinqXmlSerialization o-- "- albums*" Album
+LinqXmlSerialization o-- "- playlists*" Playlist
+LinqXmlSerialization o-- "- infotitles*" InfoTitle
+LinqXmlSerialization o-- "- customtitles*" CustomTitle
 @enduml
 ```