diff --git a/src/plugins/qmldesigner/CMakeLists.txt b/src/plugins/qmldesigner/CMakeLists.txt
index 0c9992efe29..fae93b19a8f 100644
--- a/src/plugins/qmldesigner/CMakeLists.txt
+++ b/src/plugins/qmldesigner/CMakeLists.txt
@@ -82,7 +82,6 @@ extend_qtc_library(QmlDesignerCore
 
 set(UI_FILES
   ${CMAKE_CURRENT_LIST_DIR}/designercore/instances/puppetbuildprogressdialog.ui
-  ${CMAKE_CURRENT_LIST_DIR}/designercore/instances/puppetdialog.ui
 )
 qt_wrap_ui(UI_SOURCES ${UI_FILES})
 
@@ -283,8 +282,6 @@ extend_qtc_library(QmlDesignerCore
     puppetstartdata.h
     puppetstarter.cpp
     puppetstarter.h
-    puppetdialog.cpp
-    puppetdialog.h
     qprocessuniqueptr.h
 )
 
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetdialog.cpp b/src/plugins/qmldesigner/designercore/instances/puppetdialog.cpp
deleted file mode 100644
index 935b5021680..00000000000
--- a/src/plugins/qmldesigner/designercore/instances/puppetdialog.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
-
-#include "puppetdialog.h"
-#include "ui_puppetdialog.h"
-
-namespace QmlDesigner {
-
-PuppetDialog::PuppetDialog(QWidget *parent) :
-    QDialog(parent),
-    ui(new Ui::PuppetDialog)
-{
-    ui->setupUi(this);
-}
-
-PuppetDialog::~PuppetDialog()
-{
-    delete ui;
-}
-
-void PuppetDialog::setDescription(const QString &description)
-{
-    ui->descriptionLabel->setText(description);
-}
-
-void PuppetDialog::setCopyAndPasteCode(const QString &text)
-{
-    ui->copyAndPasteTextEdit->setText(text);
-}
-
-void PuppetDialog::warning(QWidget *parent, const QString &title, const QString &description, const QString &copyAndPasteCode)
-{
-    PuppetDialog dialog(parent);
-
-    dialog.setWindowTitle(title);
-    dialog.setDescription(description);
-    dialog.setCopyAndPasteCode(copyAndPasteCode);
-
-    dialog.exec();
-}
-
-} //QmlDesigner
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetdialog.h b/src/plugins/qmldesigner/designercore/instances/puppetdialog.h
deleted file mode 100644
index 32d0b8deb42..00000000000
--- a/src/plugins/qmldesigner/designercore/instances/puppetdialog.h
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
-
-#pragma once
-
-#include <QDialog>
-
-namespace QmlDesigner {
-
-namespace Ui {
-class PuppetDialog;
-}
-
-
-class PuppetDialog : public QDialog
-{
-    Q_OBJECT
-
-public:
-    explicit PuppetDialog(QWidget *parent = nullptr);
-    ~PuppetDialog() override;
-
-    void setDescription(const QString &description);
-    void setCopyAndPasteCode(const QString &text);
-
-    static void warning(QWidget *parent,
-                   const QString &title,
-                   const QString &description,
-                   const QString &copyAndPasteCode);
-
-private:
-    Ui::PuppetDialog *ui;
-};
-
-} //QmlDesigner
diff --git a/src/plugins/qmldesigner/designercore/instances/puppetdialog.ui b/src/plugins/qmldesigner/designercore/instances/puppetdialog.ui
deleted file mode 100644
index b7efa8c26c3..00000000000
--- a/src/plugins/qmldesigner/designercore/instances/puppetdialog.ui
+++ /dev/null
@@ -1,96 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>QmlDesigner::PuppetDialog</class>
- <widget class="QDialog" name="QmlDesigner::PuppetDialog">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>1148</width>
-    <height>344</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Dialog</string>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <property name="spacing">
-    <number>12</number>
-   </property>
-   <item>
-    <widget class="QLabel" name="descriptionLabel">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-       <horstretch>0</horstretch>
-       <verstretch>1</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="text">
-      <string/>
-     </property>
-     <property name="wordWrap">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <widget class="QTextEdit" name="copyAndPasteTextEdit">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-       <horstretch>0</horstretch>
-       <verstretch>1</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="readOnly">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Close</set>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources/>
- <connections>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>accepted()</signal>
-   <receiver>QmlDesigner::PuppetDialog</receiver>
-   <slot>accept()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>248</x>
-     <y>254</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>157</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>rejected()</signal>
-   <receiver>QmlDesigner::PuppetDialog</receiver>
-   <slot>reject()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>316</x>
-     <y>260</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>286</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
- </connections>
-</ui>