only try to change affilations for known jids

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index 2dd0f04cd..ee212aed0 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -1699,7 +1699,7 @@ public class XmppConnectionService extends Service implements OnPhoneContactsLoa
 	public void changeAffiliationsInConference(final Conversation conference, MucOptions.Affiliation before, MucOptions.Affiliation after) {
 		List<Jid> jids = new ArrayList<>();
 		for (MucOptions.User user : conference.getMucOptions().getUsers()) {
-			if (user.getAffiliation() == before) {
+			if (user.getAffiliation() == before && user.getJid() != null) {
 				jids.add(user.getJid());
 			}
 		}