diff --git a/src/libs/solutions/tasking/tasktreerunner.h b/src/libs/solutions/tasking/tasktreerunner.h
index 632bd13610d..95f6ddde14e 100644
--- a/src/libs/solutions/tasking/tasktreerunner.h
+++ b/src/libs/solutions/tasking/tasktreerunner.h
@@ -4,15 +4,12 @@
 #pragma once
 
 #include "tasking_global.h"
+#include "tasktree.h"
 
 #include <QObject>
 
 namespace Tasking {
 
-enum class DoneWith;
-class Group;
-class TaskTree;
-
 class TASKING_EXPORT TaskTreeRunner : public QObject
 {
     Q_OBJECT