diff --git a/spectrum/src/frontends/slack/SlackRTM.cpp b/spectrum/src/frontends/slack/SlackRTM.cpp
index dcd02e0b869ea467658a022d30d49f0fce3d59b9..199261adeb17e22fc653c19d89839a4371ba7085 100644
--- a/spectrum/src/frontends/slack/SlackRTM.cpp
+++ b/spectrum/src/frontends/slack/SlackRTM.cpp
@@ -107,6 +107,7 @@ void SlackRTM::handlePayloadReceived(const std::string &payload) {
 		STORE_STRING(d, text);
 		STORE_STRING(d, ts);
 		STORE_STRING_OPTIONAL(d, subtype);
+		STORE_STRING_OPTIONAL(d, purpose);
 
 		rapidjson::Value &attachments = d["attachments"];
 		if (attachments.IsArray()) {
@@ -129,6 +130,9 @@ void SlackRTM::handlePayloadReceived(const std::string &payload) {
 		}
 		else if (subtype == "channel_join") {
 			
+		}
+		else if (!purpose.empty()) {
+			
 		}
 		else {
 			STORE_STRING(d, user);