diff --git a/src/components/views/elements/MemberEventListSummary.js b/src/components/views/elements/MemberEventListSummary.js
index 1a73b5a50e..510d861730 100644
--- a/src/components/views/elements/MemberEventListSummary.js
+++ b/src/components/views/elements/MemberEventListSummary.js
@@ -381,7 +381,7 @@ module.exports = React.createClass({
             // Initialise a user's events
             if (!userEvents[userId]) {
                 userEvents[userId] = [];
-                avatarMembers.push(e.target);
+                if (e.target) avatarMembers.push(e.target);
             }
             userEvents[userId].push({
                 mxEvent: e,
diff --git a/src/components/views/rooms/RoomPreviewBar.js b/src/components/views/rooms/RoomPreviewBar.js
index 3476c47f09..43c3b05295 100644
--- a/src/components/views/rooms/RoomPreviewBar.js
+++ b/src/components/views/rooms/RoomPreviewBar.js
@@ -143,9 +143,11 @@ module.exports = React.createClass({
         } else if (kicked || banned) {
             const verb = kicked ? 'kicked' : 'banned';
             const roomName = this._roomNameElement('this room');
-            const kicker = this.props.room.currentState.getMember(
+            const kickerMember = this.props.room.currentState.getMember(
                 myMember.events.member.getSender()
             );
+            const kickerName = kickerMember ?
+                kickerMember.name : myMember.events.member.getSender();
             let reason;
             if (myMember.events.member.getContent().reason) {
                 reason = <div>Reason: {myMember.events.member.getContent().reason}</div>
@@ -157,7 +159,7 @@ module.exports = React.createClass({
             joinBlock = (
                 <div>
                     <div className="mx_RoomPreviewBar_join_text">
-                        You have been {verb} from {roomName} by {kicker.name}.<br />
+                        You have been {verb} from {roomName} by {kickerName}.<br />
                         {reason}
                         {rejoinBlock}
                         <a onClick={ this.props.onForgetClick }><b>Forget</b></a>