diff --git a/spectrum/src/frontends/slack/SlackSession.cpp b/spectrum/src/frontends/slack/SlackSession.cpp
index e1a151de9e4b4ac6011544fd86acf77aca32ae48..e33e9d5f26d271e32d019c8de6d4d1c7cc71578b 100644
--- a/spectrum/src/frontends/slack/SlackSession.cpp
+++ b/spectrum/src/frontends/slack/SlackSession.cpp
@@ -215,6 +215,15 @@ void SlackSession::handleJoinMessage(const std::string &message, std::vector<std
 	m_api->channelsList(boost::bind(&SlackSession::handleJoinRoomList, this, _1, _2, _3, _4, args));
 }
 
+void SlackSession::handleSlackChannelInvite(HTTPRequest *req, bool ok, rapidjson::Document &resp, const std::string &data) {
+	Swift::Presence::ref presence = Swift::Presence::create();
+	presence->setFrom(Swift::JID("", m_uinfo.jid, "default"));
+	presence->setTo(m_component->getJID());
+	presence->setType(Swift::Presence::Available);
+	presence->addPayload(boost::shared_ptr<Swift::Payload>(new Swift::MUCPayload()));
+	m_component->getFrontend()->onPresenceReceived(presence);
+}
+
 void SlackSession::handleSlackChannelCreate(HTTPRequest *req, bool ok, rapidjson::Document &resp, const std::string &data) {
 	std::string channelId = m_api->getChannelId(req, ok, resp, data);
 	if (channelId.empty()) {
@@ -223,12 +232,7 @@ void SlackSession::handleSlackChannelCreate(HTTPRequest *req, bool ok, rapidjson
 	}
 
 	m_slackChannel = channelId;
-	Swift::Presence::ref presence = Swift::Presence::create();
-	presence->setFrom(Swift::JID("", m_uinfo.jid, "default"));
-	presence->setTo(m_component->getJID());
-	presence->setType(Swift::Presence::Available);
-	presence->addPayload(boost::shared_ptr<Swift::Payload>(new Swift::MUCPayload()));
-	m_component->getFrontend()->onPresenceReceived(presence);
+	m_api->channelsInvite(m_slackChannel, m_rtm->getSelfId(), boost::bind(&SlackSession::handleSlackChannelInvite, this, _1, _2, _3, _4));
 }
 
 void SlackSession::handleSlackChannelList(HTTPRequest *req, bool ok, rapidjson::Document &resp, const std::string &data) {
@@ -237,12 +241,7 @@ void SlackSession::handleSlackChannelList(HTTPRequest *req, bool ok, rapidjson::
 
 	if (channels.find(m_slackChannel) != channels.end()) {
 		m_slackChannel = channels[m_slackChannel].id;
-		Swift::Presence::ref presence = Swift::Presence::create();
-		presence->setFrom(Swift::JID("", m_uinfo.jid, "default"));
-		presence->setTo(m_component->getJID());
-		presence->setType(Swift::Presence::Available);
-		presence->addPayload(boost::shared_ptr<Swift::Payload>(new Swift::MUCPayload()));
-		m_component->getFrontend()->onPresenceReceived(presence);
+		m_api->channelsInvite(m_slackChannel, m_rtm->getSelfId(), boost::bind(&SlackSession::handleSlackChannelInvite, this, _1, _2, _3, _4));
 	}
 	else {
 		m_api->channelsCreate(m_slackChannel, boost::bind(&SlackSession::handleSlackChannelCreate, this, _1, _2, _3, _4));