diff --git a/src/plugins/projectexplorer/task.cpp b/src/plugins/projectexplorer/task.cpp
index 7ff3dc7ac5a..9d6f4a33168 100644
--- a/src/plugins/projectexplorer/task.cpp
+++ b/src/plugins/projectexplorer/task.cpp
@@ -25,6 +25,7 @@
 
 #include "task.h"
 
+#include <texteditor/textmark.h>
 #include <utils/utilsicons.h>
 #include <utils/qtcassert.h>
 
diff --git a/src/plugins/projectexplorer/task.h b/src/plugins/projectexplorer/task.h
index 5f059180241..9664cbf00d3 100644
--- a/src/plugins/projectexplorer/task.h
+++ b/src/plugins/projectexplorer/task.h
@@ -28,13 +28,16 @@
 #include "projectexplorer_export.h"
 
 #include <coreplugin/id.h>
-#include <texteditor/textmark.h>
 #include <utils/fileutils.h>
 
 #include <QIcon>
 #include <QMetaType>
 #include <QTextLayout>
 
+namespace TextEditor {
+class TextMark;
+}
+
 namespace ProjectExplorer {
 
 class TaskHub;
diff --git a/src/plugins/projectexplorer/taskhub.cpp b/src/plugins/projectexplorer/taskhub.cpp
index c6cabc1b605..699295af844 100644
--- a/src/plugins/projectexplorer/taskhub.cpp
+++ b/src/plugins/projectexplorer/taskhub.cpp
@@ -28,6 +28,7 @@
 
 #include <coreplugin/coreicons.h>
 #include <coreplugin/ioutputpane.h>
+#include <texteditor/textmark.h>
 #include <utils/qtcassert.h>
 #include <utils/theme/theme.h>
 #include <utils/utilsicons.h>