diff --git a/src/blackmisc/blackmiscfreefunctions.h b/src/blackmisc/blackmiscfreefunctions.h
index 9a4fad0b1..c6548d7fc 100644
--- a/src/blackmisc/blackmiscfreefunctions.h
+++ b/src/blackmisc/blackmiscfreefunctions.h
@@ -22,6 +22,7 @@
 #include <QMetaType>
 #include <QDBusArgument>
 #include <QTextStream>
+#include <QDataStream>
 
 #include <memory>