--- qca-qt5-2.1.0.3/include/QtCrypto/qca_basic.h.orig	2015-12-23 00:59:20.549274673 +0100
+++ qca-qt5-2.1.0.3/include/QtCrypto/qca_basic.h	2015-12-23 00:59:34.135167811 +0100
@@ -35,6 +35,8 @@
 
 #include "qca_core.h"
 
+#include <QIODevice>
+
 // Qt5 comes with QStringLiteral for wrapping string literals, which Qt4 does
 // not have. It is needed if the headers are built with QT_NO_CAST_FROM_ASCII.
 // Defining it here as QString::fromUtf8 for convenience.