diff --git a/src/chat/chat-room/server-group-chat-room-p.h b/src/chat/chat-room/server-group-chat-room-p.h
index 2780e0a08..724d32fb4 100644
--- a/src/chat/chat-room/server-group-chat-room-p.h
+++ b/src/chat/chat-room/server-group-chat-room-p.h
@@ -84,6 +84,7 @@ private:
 	bool isAdminLeft () const;
 	void queueMessage (const std::shared_ptr<Message> &message);
 	void queueMessage (const std::shared_ptr<Message> &msg, const IdentityAddress &deviceAddress);
+	void removeLeftParticipants (const std::list <IdentityAddress> &compatibleParticipants);
 
 	void onParticipantDeviceLeft (const std::shared_ptr<const CallSession> &session);
 
diff --git a/src/chat/chat-room/server-group-chat-room-stub.cpp b/src/chat/chat-room/server-group-chat-room-stub.cpp
index 57a4d2491..9f30159bd 100644
--- a/src/chat/chat-room/server-group-chat-room-stub.cpp
+++ b/src/chat/chat-room/server-group-chat-room-stub.cpp
@@ -42,11 +42,11 @@ shared_ptr<Participant> ServerGroupChatRoomPrivate::findFilteredParticipant (con
 	return nullptr;
 }
 
-ParticipantDevice::State ServerGroupChatRoomPrivate::getParticipantDeviceState (const std::shared_ptr<const ParticipantDevice> &device) const {
+ParticipantDevice::State ServerGroupChatRoomPrivate::getParticipantDeviceState (const shared_ptr<const ParticipantDevice> &device) const {
 	return device->getState();
 }
 
-void ServerGroupChatRoomPrivate::setParticipantDeviceState (const std::shared_ptr<ParticipantDevice> &device, ParticipantDevice::State state) {
+void ServerGroupChatRoomPrivate::setParticipantDeviceState (const shared_ptr<ParticipantDevice> &device, ParticipantDevice::State state) {
 	device->setState(state);
 }
 
@@ -90,23 +90,25 @@ LinphoneReason ServerGroupChatRoomPrivate::onSipMessageReceived (SalOp *, const
 
 void ServerGroupChatRoomPrivate::designateAdmin () {}
 
-void ServerGroupChatRoomPrivate::dispatchMessage (const std::shared_ptr<Message> &message, const std::string &uri) {}
+void ServerGroupChatRoomPrivate::dispatchMessage (const shared_ptr<Message> &message, const string &uri) {}
 
 void ServerGroupChatRoomPrivate::finalizeCreation () {}
 
-void ServerGroupChatRoomPrivate::inviteDevice (const std::shared_ptr<ParticipantDevice> &device) {}
+void ServerGroupChatRoomPrivate::inviteDevice (const shared_ptr<ParticipantDevice> &device) {}
 
 bool ServerGroupChatRoomPrivate::isAdminLeft () const {
 	return false;
 }
 
-void ServerGroupChatRoomPrivate::queueMessage (const std::shared_ptr<Message> &message) {}
+void ServerGroupChatRoomPrivate::queueMessage (const shared_ptr<Message> &message) {}
 
-void ServerGroupChatRoomPrivate::queueMessage (const std::shared_ptr<Message> &msg, const IdentityAddress &deviceAddress) {}
+void ServerGroupChatRoomPrivate::queueMessage (const shared_ptr<Message> &msg, const IdentityAddress &deviceAddress) {}
+
+void ServerGroupChatRoomPrivate::removeLeftParticipants (const list <IdentityAddress> &compatibleParticipants) {}
 
 // -----------------------------------------------------------------------------
 
-void ServerGroupChatRoomPrivate::onParticipantDeviceLeft (const std::shared_ptr<const CallSession> &session) {}
+void ServerGroupChatRoomPrivate::onParticipantDeviceLeft (const shared_ptr<const CallSession> &session) {}
 
 // -----------------------------------------------------------------------------