diff --git a/src/plugins/coreplugin/idocumentfactory.cpp b/src/plugins/coreplugin/idocumentfactory.cpp
index 26ef65f608a..0d8280dc080 100644
--- a/src/plugins/coreplugin/idocumentfactory.cpp
+++ b/src/plugins/coreplugin/idocumentfactory.cpp
@@ -31,8 +31,7 @@ namespace Core {
 
 static QList<IDocumentFactory *> g_documentFactories;
 
-IDocumentFactory::IDocumentFactory(QObject *parent)
-    : QObject(parent)
+IDocumentFactory::IDocumentFactory()
 {
     g_documentFactories.append(this);
 }
diff --git a/src/plugins/coreplugin/idocumentfactory.h b/src/plugins/coreplugin/idocumentfactory.h
index a38176fa0ef..796eca0eb6c 100644
--- a/src/plugins/coreplugin/idocumentfactory.h
+++ b/src/plugins/coreplugin/idocumentfactory.h
@@ -29,7 +29,6 @@
 
 #include <utils/id.h>
 
-#include <QObject>
 #include <QStringList>
 
 #include <functional>
@@ -38,13 +37,11 @@ namespace Core {
 
 class IDocument;
 
-class CORE_EXPORT IDocumentFactory : public QObject
+class CORE_EXPORT IDocumentFactory
 {
-    Q_OBJECT
-
 public:
-    IDocumentFactory(QObject *parent = nullptr);
-    ~IDocumentFactory() override;
+    IDocumentFactory();
+    ~IDocumentFactory();
 
     static const QList<IDocumentFactory *> allDocumentFactories();