diff --git a/src/main/java/eu/siacs/conversations/services/AvatarService.java b/src/main/java/eu/siacs/conversations/services/AvatarService.java
index c965d6b0c39eec01c8d75695a7e57df7fe3ead88..e20b55a5c9b1f01961399c74411ef4eb8fe4706c 100644
--- a/src/main/java/eu/siacs/conversations/services/AvatarService.java
+++ b/src/main/java/eu/siacs/conversations/services/AvatarService.java
@@ -28,7 +28,7 @@ public class AvatarService {
 	private static final String PREFIX_ACCOUNT = "account";
 	private static final String PREFIX_GENERIC = "generic";
 
-	private ArrayList<Integer> sizes = new ArrayList<Integer>();
+	final private ArrayList<Integer> sizes = new ArrayList<>();
 
 	protected XmppConnectionService mXmppConnectionService = null;