diff --git a/spectrum/src/frontends/slack/SlackUserManager.cpp b/spectrum/src/frontends/slack/SlackUserManager.cpp
index 533c649a8c3f948c92eb5ec7c9587e8d9ea557ca..ca5c245d2d1103d7682c93566c531c4c2f8eb58c 100644
--- a/spectrum/src/frontends/slack/SlackUserManager.cpp
+++ b/spectrum/src/frontends/slack/SlackUserManager.cpp
@@ -232,7 +232,7 @@ void SlackUserManager::sendVCard(unsigned int id, Swift::VCard::ref vcard) {
 
 }
 
-void SlackUserManager::sendMessage(boost::shared_ptr<Swift::Message> message) {
+void SlackUserManager::sendMessage(SWIFTEN_SHRPTR_NAMESPACE::shared_ptr<Swift::Message> message) {
 	User *user = getUser(message->getTo().toBare().toString());
 	if (!user) {
 		LOG4CXX_ERROR(logger, "Received message for unknown user " << message->getTo().toBare().toString());