diff --git a/spectrum/src/frontends/slack/SlackUserManager.cpp b/spectrum/src/frontends/slack/SlackUserManager.cpp
index 02f064a4bc556a6c2bf8636256300382b55f8b6d..6cf0f1ae6ff46741e2dc849d378685ceac2aeaa3 100644
--- a/spectrum/src/frontends/slack/SlackUserManager.cpp
+++ b/spectrum/src/frontends/slack/SlackUserManager.cpp
@@ -110,7 +110,7 @@ void SlackUserManager::handleUserCreated(User *user) {
 
 bool SlackUserManager::handleAdminMessage(Swift::Message::ref message) {
 #if HAVE_SWIFTEN_3
-	std::string body = message->getBody().value_or("");
+	std::string body = message->getBody().get_value_or("");
 #else
 	std::string body = message->getBody();
 #endif