diff --git a/main/src/ui/util/helper.vala b/main/src/ui/util/helper.vala
index 16f2d66b..5c72743f 100644
--- a/main/src/ui/util/helper.vala
+++ b/main/src/ui/util/helper.vala
@@ -168,7 +168,7 @@ private static string get_groupchat_display_name(StreamInteractor stream_interac
                 if (builder.len != 0) {
                     builder.append(", ");
                 }
-                builder.append((get_real_display_name(stream_interactor, account, occupant) ?? occupant.localpart).split(" ")[0]);
+                builder.append((get_real_display_name(stream_interactor, account, occupant) ?? occupant.localpart ?? occupant.domainpart).split(" ")[0]);
             }
             return builder.str;
         }