diff --git a/src/matrix/calls/group/GroupCall.ts b/src/matrix/calls/group/GroupCall.ts
index 99e907fe..707188f7 100644
--- a/src/matrix/calls/group/GroupCall.ts
+++ b/src/matrix/calls/group/GroupCall.ts
@@ -77,6 +77,7 @@ export class GroupCall extends EventEmitter<{change: never}> {
     ) {
         super();
         logItem.set("id", this.id);
+        logItem.set("sessionId", this.options.sessionId);
         this._state = newCall ? GroupCallState.Fledgling : GroupCallState.Created;
         this._memberOptions = Object.assign({}, options, {
             confId: this.id,
@@ -244,7 +245,7 @@ export class GroupCall extends EventEmitter<{change: never}> {
                                 this._members.remove(memberKey);
                                 member = undefined;                                
                             }
-                            const logItem = this.logItem.child({l: "member", id: memberKey, sessionId: device.session_id});
+                            const logItem = this.logItem.child({l: "member", id: memberKey});
                             log.set("add", true);
                             log.refDetached(logItem);
                             member = new Member(
diff --git a/src/matrix/calls/group/Member.ts b/src/matrix/calls/group/Member.ts
index 314734d8..28190967 100644
--- a/src/matrix/calls/group/Member.ts
+++ b/src/matrix/calls/group/Member.ts
@@ -60,7 +60,9 @@ export class Member {
         private callDeviceMembership: CallDeviceMembership,
         private readonly options: Options,
         private readonly logItem: ILogItem,
-    ) {}
+    ) {
+        this.logItem.set("sessionId", this.sessionId);
+    }
 
     get remoteMedia(): RemoteMedia | undefined {
         return this.peerCall?.remoteMedia;