diff --git a/lang/qt/src/qgpgmenewcryptoconfig.cpp b/lang/qt/src/qgpgmenewcryptoconfig.cpp
index 4738a03b..6901eef1 100644
--- a/lang/qt/src/qgpgmenewcryptoconfig.cpp
+++ b/lang/qt/src/qgpgmenewcryptoconfig.cpp
@@ -49,6 +49,7 @@
 #include <sstream>
 #include <string>
 #include <cassert>
+#include <functional>
 
 using namespace QGpgME;
 using namespace GpgME;
diff --git a/lang/qt/src/threadedjobmixin.h b/lang/qt/src/threadedjobmixin.h
index 32b23db9..5ad2737f 100644
--- a/lang/qt/src/threadedjobmixin.h
+++ b/lang/qt/src/threadedjobmixin.h
@@ -51,6 +51,7 @@
 #include "job.h"
 
 #include <cassert>
+#include <functional>
 
 namespace QGpgME
 {