diff --git a/src/User.h b/src/User.h
index b3bd370ec..5f7e82d90 100644
--- a/src/User.h
+++ b/src/User.h
@@ -32,6 +32,7 @@
 #define MUMBLE_USER_H_
 
 #include <QtCore/QByteArray>
+#include <QtCore/QDateTime>
 #include <QtCore/QString>
 #include <boost/optional.hpp>