diff --git a/src/plugins/clangtools/clangselectablefilesdialog.ui b/src/plugins/clangtools/clangselectablefilesdialog.ui
index 316b9946fb9..2fe10139a31 100644
--- a/src/plugins/clangtools/clangselectablefilesdialog.ui
+++ b/src/plugins/clangtools/clangselectablefilesdialog.ui
@@ -52,7 +52,7 @@
        </layout>
       </item>
       <item>
-       <widget class="ClangTools::ClangToolsBasicSettings" name="clangToolsBasicSettings" native="true"/>
+       <widget class="ClangTools::Internal::ClangToolsBasicSettings" name="clangToolsBasicSettings" native="true"/>
       </item>
      </layout>
     </widget>
@@ -87,7 +87,7 @@
  </widget>
  <customwidgets>
   <customwidget>
-   <class>ClangTools::ClangToolsBasicSettings</class>
+   <class>ClangTools::Internal::ClangToolsBasicSettings</class>
    <extends>QWidget</extends>
    <header>clangtools/clangtoolsbasicsettings.h</header>
   </customwidget>
diff --git a/src/plugins/clangtools/clangtoolsbasicsettings.cpp b/src/plugins/clangtools/clangtoolsbasicsettings.cpp
index 7fe56e9193b..bf1d5337006 100644
--- a/src/plugins/clangtools/clangtoolsbasicsettings.cpp
+++ b/src/plugins/clangtools/clangtoolsbasicsettings.cpp
@@ -29,6 +29,7 @@
 #include "clangtoolsutils.h"
 
 namespace ClangTools {
+namespace Internal {
 
 ClangToolsBasicSettings::ClangToolsBasicSettings(QWidget *parent)
     : QWidget(parent)
@@ -47,4 +48,5 @@ Ui::ClangToolsBasicSettings *ClangToolsBasicSettings::ui()
     return m_ui;
 }
 
+} // namespace Internal
 } // namespace ClangTools
diff --git a/src/plugins/clangtools/clangtoolsbasicsettings.h b/src/plugins/clangtools/clangtoolsbasicsettings.h
index fb896e830de..b9ecb0285ec 100644
--- a/src/plugins/clangtools/clangtoolsbasicsettings.h
+++ b/src/plugins/clangtools/clangtoolsbasicsettings.h
@@ -28,6 +28,7 @@
 #include <QWidget>
 
 namespace ClangTools {
+namespace Internal {
 
 namespace Ui { class ClangToolsBasicSettings; }
 
@@ -46,4 +47,5 @@ private:
     Ui::ClangToolsBasicSettings *m_ui;
 };
 
+} // namespace Internal
 } // namespace ClangTools
diff --git a/src/plugins/clangtools/clangtoolsbasicsettings.ui b/src/plugins/clangtools/clangtoolsbasicsettings.ui
index 4b6f14111e7..ccdba126bd3 100644
--- a/src/plugins/clangtools/clangtoolsbasicsettings.ui
+++ b/src/plugins/clangtools/clangtoolsbasicsettings.ui
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
- <class>ClangTools::ClangToolsBasicSettings</class>
- <widget class="QWidget" name="ClangTools::ClangToolsBasicSettings">
+ <class>ClangTools::Internal::ClangToolsBasicSettings</class>
+ <widget class="QWidget" name="ClangTools::Internal::ClangToolsBasicSettings">
   <property name="geometry">
    <rect>
     <x>0</x>
diff --git a/src/plugins/clangtools/clangtoolsconfigwidget.ui b/src/plugins/clangtools/clangtoolsconfigwidget.ui
index ea8dafb92b8..b2d5aa9875c 100644
--- a/src/plugins/clangtools/clangtoolsconfigwidget.ui
+++ b/src/plugins/clangtools/clangtoolsconfigwidget.ui
@@ -21,7 +21,7 @@
      </property>
      <layout class="QVBoxLayout" name="verticalLayout_2">
       <item>
-       <widget class="ClangTools::ClangToolsBasicSettings" name="clangToolsBasicSettings" native="true"/>
+       <widget class="ClangTools::Internal::ClangToolsBasicSettings" name="clangToolsBasicSettings" native="true"/>
       </item>
       <item>
        <layout class="QHBoxLayout" name="processesLayout">
@@ -77,7 +77,7 @@
  </widget>
  <customwidgets>
   <customwidget>
-   <class>ClangTools::ClangToolsBasicSettings</class>
+   <class>ClangTools::Internal::ClangToolsBasicSettings</class>
    <extends>QWidget</extends>
    <header>clangtools/clangtoolsbasicsettings.h</header>
   </customwidget>