diff --git a/lang/qt/src/downloadjob.h b/lang/qt/src/downloadjob.h
index 7c8bb725..b916c41d 100644
--- a/lang/qt/src/downloadjob.h
+++ b/lang/qt/src/downloadjob.h
@@ -38,6 +38,7 @@
 #include "job.h"
 
 #include <QtCore/QByteArray>
+#include <QtCore/QStringList>
 
 #include <memory>
 
@@ -46,7 +47,6 @@ namespace GpgME
 class Error;
 }
 
-class QStringList;
 class QIODevice;
 class QByteArray;
 
diff --git a/lang/qt/src/exportjob.h b/lang/qt/src/exportjob.h
index 7f79ea08..4fdb468d 100644
--- a/lang/qt/src/exportjob.h
+++ b/lang/qt/src/exportjob.h
@@ -39,14 +39,13 @@
 #include "job.h"
 
 #include <QtCore/QByteArray>
+#include <QtCore/QStringList>
 
 namespace GpgME
 {
 class Error;
 }
 
-class QStringList;
-
 namespace QGpgME
 {
 
diff --git a/lang/qt/src/keylistjob.h b/lang/qt/src/keylistjob.h
index 515a0e4d..ace9fbe0 100644
--- a/lang/qt/src/keylistjob.h
+++ b/lang/qt/src/keylistjob.h
@@ -44,6 +44,8 @@
 # include <gpgme++/key.h>
 #endif
 
+#include <QtCore/QStringList>
+
 #include <vector>
 
 namespace GpgME
@@ -52,8 +54,6 @@ class Error;
 class KeyListResult;
 }
 
-class QStringList;
-
 namespace QGpgME
 {
 
diff --git a/lang/qt/src/refreshkeysjob.h b/lang/qt/src/refreshkeysjob.h
index 6bd748ac..67774c2f 100644
--- a/lang/qt/src/refreshkeysjob.h
+++ b/lang/qt/src/refreshkeysjob.h
@@ -38,6 +38,8 @@
 #include "job.h"
 #include "qgpgme_export.h"
 
+#include <QtCore/QStringList>
+
 #include <vector>
 
 namespace GpgME
@@ -46,8 +48,6 @@ class Error;
 class Key;
 }
 
-class QStringList;
-
 namespace QGpgME
 {