X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fdata%2FSone.java;h=99d65ec106f73384a8d83733233050a6adc53444;hp=ac6e41ae2c7c61c96c5cbec8f290ecd8a5726348;hb=55c9d543dfc4a1ece97a6c8a0b8e8f49ea814bd1;hpb=17ed3b897e37c8b16c559b79bfe97d32a7605bfb

diff --git a/src/main/java/net/pterodactylus/sone/data/Sone.java b/src/main/java/net/pterodactylus/sone/data/Sone.java
index ac6e41a..99d65ec 100644
--- a/src/main/java/net/pterodactylus/sone/data/Sone.java
+++ b/src/main/java/net/pterodactylus/sone/data/Sone.java
@@ -791,7 +791,9 @@ public class Sone implements Fingerprintable, Comparable<Sone> {
 	 */
 	public void addAlbum(Album album) {
 		Validation.begin().isNotNull("Album", album).check().isEqual("Album Owner", album.getSone(), this).check();
-		albums.add(album);
+		if (!albums.contains(album)) {
+			albums.add(album);
+		}
 	}
 
 	/**