diff --git a/src/main/java/eu/siacs/conversations/entities/Presences.java b/src/main/java/eu/siacs/conversations/entities/Presences.java
index bccf31170eb58a2d8caf9dd5287b56ba4fe57235..4729a11b92a14f1e61ebe987e84ce8c1fa81af32 100644
--- a/src/main/java/eu/siacs/conversations/entities/Presences.java
+++ b/src/main/java/eu/siacs/conversations/entities/Presences.java
@@ -15,7 +15,7 @@ public class Presences {
 	public static final int DND = 3;
 	public static final int OFFLINE = 4;
 
-	private Hashtable<String, Integer> presences = new Hashtable<String, Integer>();
+	private final Hashtable<String, Integer> presences = new Hashtable<>();
 
 	public Hashtable<String, Integer> getPresences() {
 		return this.presences;