diff --git a/src/plugins/beautifier/CMakeLists.txt b/src/plugins/beautifier/CMakeLists.txt
index 6cdf581016f..12e39464f00 100644
--- a/src/plugins/beautifier/CMakeLists.txt
+++ b/src/plugins/beautifier/CMakeLists.txt
@@ -15,7 +15,7 @@ add_qtc_plugin(Beautifier
     clangformat/clangformatconstants.h
     clangformat/clangformatoptionspage.cpp clangformat/clangformatoptionspage.h
     clangformat/clangformatsettings.cpp clangformat/clangformatsettings.h
-    configurationdialog.cpp configurationdialog.h configurationdialog.ui
+    configurationdialog.cpp configurationdialog.h
     configurationeditor.cpp configurationeditor.h
     configurationpanel.cpp configurationpanel.h
     generaloptionspage.cpp generaloptionspage.h
diff --git a/src/plugins/beautifier/beautifier.qbs b/src/plugins/beautifier/beautifier.qbs
index 7238c891d28..5144c1c6ff3 100644
--- a/src/plugins/beautifier/beautifier.qbs
+++ b/src/plugins/beautifier/beautifier.qbs
@@ -20,7 +20,6 @@ QtcPlugin {
         "beautifierplugin.h",
         "configurationdialog.cpp",
         "configurationdialog.h",
-        "configurationdialog.ui",
         "configurationeditor.cpp",
         "configurationeditor.h",
         "configurationpanel.cpp",
diff --git a/src/plugins/beautifier/configurationdialog.cpp b/src/plugins/beautifier/configurationdialog.cpp
index 2b8a6f650cb..e218cb6ded4 100644
--- a/src/plugins/beautifier/configurationdialog.cpp
+++ b/src/plugins/beautifier/configurationdialog.cpp
@@ -24,34 +24,73 @@
 ****************************************************************************/
 
 #include "configurationdialog.h"
-#include "ui_configurationdialog.h"
 
 #include "abstractsettings.h"
+#include "configurationeditor.h"
 
 #include <texteditor/fontsettings.h>
 #include <texteditor/texteditorsettings.h>
 
+#include <utils/layoutbuilder.h>
+
+#include <QDialogButtonBox>
+#include <QLabel>
+#include <QLineEdit>
 #include <QPushButton>
 #include <QRegularExpressionValidator>
+#include <QSplitter>
+#include <QTextEdit>
 
-namespace Beautifier {
-namespace Internal {
+namespace Beautifier::Internal {
 
-ConfigurationDialog::ConfigurationDialog(QWidget *parent) :
-    QDialog(parent),
-    ui(new Ui::ConfigurationDialog)
+ConfigurationDialog::ConfigurationDialog(QWidget *parent)
+    : QDialog(parent)
 {
-    ui->setupUi(this);
+    resize(640, 512);
+
+    m_name = new QLineEdit;
+
+    m_editor = new ConfigurationEditor;
+
+    m_documentationHeader = new QLabel;
+
+    m_documentation = new QTextEdit;
+    m_documentation->setReadOnly(true);
+
+    m_buttonBox = new QDialogButtonBox(this);
+    m_buttonBox->setOrientation(Qt::Horizontal);
+    m_buttonBox->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);
+
+    using namespace Utils::Layouting;
+
+    Column {
+        Group {
+            Title(tr("Name")),
+            Column { m_name }
+        },
+        Group {
+            Title(tr("Value")),
+            Column {
+                m_editor,
+                m_documentationHeader,
+                m_documentation
+            }
+        },
+        m_buttonBox
+    }.attachTo(this);
+
+    connect(m_buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
+    connect(m_buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
 
     // Filter out characters which are not allowed in a file name
     QRegularExpressionValidator *fileNameValidator = new QRegularExpressionValidator(
-                QRegularExpression("^[^\\/\\\\\\?\\>\\<\\*\\%\\:\\\"\\']*$"), ui->name);
-    ui->name->setValidator(fileNameValidator);
+                QRegularExpression("^[^\\/\\\\\\?\\>\\<\\*\\%\\:\\\"\\']*$"), m_name);
+    m_name->setValidator(fileNameValidator);
 
     updateDocumentation();
-    connect(ui->name, &QLineEdit::textChanged, this, &ConfigurationDialog::updateOkButton);
+    connect(m_name, &QLineEdit::textChanged, this, &ConfigurationDialog::updateOkButton);
     updateOkButton(); // force initial test.
-    connect(ui->editor, &ConfigurationEditor::documentationChanged,
+    connect(m_editor, &ConfigurationEditor::documentationChanged,
             this, &ConfigurationDialog::updateDocumentation);
 
     // Set palette and font according to settings
@@ -66,11 +105,11 @@ ConfigurationDialog::ConfigurationDialog(QWidget *parent) :
     if (selectionFormat.background().style() != Qt::NoBrush)
         pal.setColor(QPalette::Highlight, selectionFormat.background().color());
     pal.setBrush(QPalette::HighlightedText, selectionFormat.foreground());
-    ui->documentation->setPalette(pal);
-    ui->editor->setPalette(pal);
+    m_documentation->setPalette(pal);
+    m_editor->setPalette(pal);
 
-    ui->documentation->setFont(tf.font());
-    ui->editor->setFont(tf.font());
+    m_documentation->setFont(tf.font());
+    m_editor->setFont(tf.font());
 
     // Set style sheet for documentation browser
     const QTextCharFormat tfOption = fs.toTextCharFormat(TextEditor::C_FIELD);
@@ -85,63 +124,59 @@ ConfigurationDialog::ConfigurationDialog(QWidget *parent) :
             .arg(tfOption.foreground().color().name())
             .arg(tfOption.background().style() == Qt::NoBrush
                  ? QString() : tfOption.background().color().name());
-    ui->documentation->document()->setDefaultStyleSheet(css);
+    m_documentation->document()->setDefaultStyleSheet(css);
 }
 
-ConfigurationDialog::~ConfigurationDialog()
-{
-    delete ui;
-}
+ConfigurationDialog::~ConfigurationDialog() = default;
 
 void ConfigurationDialog::setSettings(AbstractSettings *settings)
 {
     m_settings = settings;
-    ui->editor->setSettings(m_settings);
+    m_editor->setSettings(m_settings);
 }
 
 void ConfigurationDialog::clear()
 {
-    ui->name->clear();
-    ui->editor->clear();
+    m_name->clear();
+    m_editor->clear();
     m_currentKey.clear();
     updateOkButton();
 }
 
 QString ConfigurationDialog::key() const
 {
-    return ui->name->text().simplified();
+    return m_name->text().simplified();
 }
 
 void ConfigurationDialog::setKey(const QString &key)
 {
     m_currentKey = key;
-    ui->name->setText(m_currentKey);
+    m_name->setText(m_currentKey);
     if (m_settings)
-        ui->editor->setPlainText(m_settings->style(m_currentKey));
+        m_editor->setPlainText(m_settings->style(m_currentKey));
     else
-        ui->editor->clear();
+        m_editor->clear();
 }
 
 QString ConfigurationDialog::value() const
 {
-    return ui->editor->toPlainText();
+    return m_editor->toPlainText();
 }
 
 void ConfigurationDialog::updateOkButton()
 {
-    const QString key = ui->name->text().simplified();
+    const QString key = m_name->text().simplified();
     const bool exists = m_settings && key != m_currentKey && m_settings->styleExists(key);
-    ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(!(key.isEmpty() || exists));
+    m_buttonBox->button(QDialogButtonBox::Ok)->setEnabled(!(key.isEmpty() || exists));
 }
 
 void ConfigurationDialog::updateDocumentation(const QString &word, const QString &docu)
 {
     if (word.isEmpty())
-        ui->documentationHeader->setText(tr("Documentation"));
+        m_documentationHeader->setText(tr("Documentation"));
     else
-        ui->documentationHeader->setText(tr("Documentation for \"%1\"").arg(word));
-    ui->documentation->setHtml(docu);
+        m_documentationHeader->setText(tr("Documentation for \"%1\"").arg(word));
+    m_documentation->setHtml(docu);
 }
 
-} // namespace Internal
-} // namespace Beautifier
+} // Beautifier::Internal
diff --git a/src/plugins/beautifier/configurationdialog.h b/src/plugins/beautifier/configurationdialog.h
index e720db480fd..91b64175fa1 100644
--- a/src/plugins/beautifier/configurationdialog.h
+++ b/src/plugins/beautifier/configurationdialog.h
@@ -26,13 +26,18 @@
 #pragma once
 
 #include <QDialog>
-#include <QString>
 
-namespace Beautifier {
-namespace Internal {
+QT_BEGIN_NAMESPACE
+class QDialogButtonBox;
+class QLabel;
+class QLineEdit;
+class QTextEdit;
+QT_END_NAMESPACE
+
+namespace Beautifier::Internal {
 
 class AbstractSettings;
-namespace Ui { class ConfigurationDialog; }
+class ConfigurationEditor;
 
 class ConfigurationDialog : public QDialog
 {
@@ -51,11 +56,15 @@ public:
 private:
     void updateOkButton();
     void updateDocumentation(const QString &word = QString(), const QString &docu = QString());
-    Ui::ConfigurationDialog *ui;
+
     AbstractSettings *m_settings = nullptr;
     QString m_currentKey;
+
+    QLineEdit *m_name;
+    ConfigurationEditor *m_editor;
+    QLabel *m_documentationHeader;
+    QTextEdit *m_documentation;
+    QDialogButtonBox *m_buttonBox;
 };
 
-
-} // namespace Internal
-} // namespace Beautifier
+} // Beautifier::Internal
diff --git a/src/plugins/beautifier/configurationdialog.ui b/src/plugins/beautifier/configurationdialog.ui
deleted file mode 100644
index 169e69c8ede..00000000000
--- a/src/plugins/beautifier/configurationdialog.ui
+++ /dev/null
@@ -1,118 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>Beautifier::Internal::ConfigurationDialog</class>
- <widget class="QDialog" name="Beautifier::Internal::ConfigurationDialog">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>640</width>
-    <height>512</height>
-   </rect>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <item>
-    <widget class="QGroupBox" name="groupBox">
-     <property name="title">
-      <string>Name</string>
-     </property>
-     <layout class="QVBoxLayout" name="verticalLayout_2">
-      <item>
-       <widget class="QLineEdit" name="name"/>
-      </item>
-     </layout>
-    </widget>
-   </item>
-   <item>
-    <widget class="QGroupBox" name="groupBox_2">
-     <property name="title">
-      <string>Value</string>
-     </property>
-     <layout class="QVBoxLayout" name="verticalLayout_4">
-      <item>
-       <widget class="QSplitter" name="splitter">
-        <property name="orientation">
-         <enum>Qt::Vertical</enum>
-        </property>
-        <property name="childrenCollapsible">
-         <bool>false</bool>
-        </property>
-        <widget class="Beautifier::Internal::ConfigurationEditor" name="editor"/>
-        <widget class="QWidget" name="layoutWidget">
-         <layout class="QVBoxLayout" name="verticalLayout_3">
-          <item>
-           <widget class="QLabel" name="documentationHeader">
-            <property name="text">
-             <string>Documentation</string>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <widget class="QTextEdit" name="documentation">
-            <property name="readOnly">
-             <bool>true</bool>
-            </property>
-           </widget>
-          </item>
-         </layout>
-        </widget>
-       </widget>
-      </item>
-     </layout>
-    </widget>
-   </item>
-   <item>
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-     </property>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <customwidgets>
-  <customwidget>
-   <class>Beautifier::Internal::ConfigurationEditor</class>
-   <extends>QPlainTextEdit</extends>
-   <header location="global">beautifier/configurationeditor.h</header>
-  </customwidget>
- </customwidgets>
- <resources/>
- <connections>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>accepted()</signal>
-   <receiver>Beautifier::Internal::ConfigurationDialog</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>Beautifier::Internal::ConfigurationDialog</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>