diff --git a/src/plugins/coreplugin/editormanager/editormanager_p.h b/src/plugins/coreplugin/editormanager/editormanager_p.h
index b1d2e3ad11b..ca8d8e6313e 100644
--- a/src/plugins/coreplugin/editormanager/editormanager_p.h
+++ b/src/plugins/coreplugin/editormanager/editormanager_p.h
@@ -37,6 +37,8 @@
 #include "idocument.h"
 #include "ieditor.h"
 
+#include <coreplugin/idocument.h>
+
 #include <QList>
 #include <QObject>
 #include <QPointer>