diff --git a/src/ui/qgscategorizedsymbolrendererwidget.ui b/src/ui/qgscategorizedsymbolrendererwidget.ui
index 7a61b3c268e..5b785291d1b 100644
--- a/src/ui/qgscategorizedsymbolrendererwidget.ui
+++ b/src/ui/qgscategorizedsymbolrendererwidget.ui
@@ -25,7 +25,7 @@
     </widget>
    </item>
    <item row="0" column="1">
-    <widget class="QgsFieldExpressionWidget" name="mExpressionWidget">
+    <widget class="QgsFieldExpressionWidget" name="mExpressionWidget" native="true">
      <property name="focusPolicy">
       <enum>Qt::StrongFocus</enum>
      </property>
@@ -209,20 +209,20 @@
   <customwidget>
    <class>QgsFieldExpressionWidget</class>
    <extends>QWidget</extends>
-   <header>qgsfieldexpressionwidget.h</header>
+   <header location="global">qgsfieldexpressionwidget.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>QgsSymbolButton</class>
-   <extends>QToolButton</extends>
-   <header>qgssymbolbutton.h</header>
-  </customwidget>
   <customwidget>
    <class>QgsColorRampButton</class>
    <extends>QToolButton</extends>
    <header>qgscolorrampbutton.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>QgsSymbolButton</class>
+   <extends>QToolButton</extends>
+   <header>qgssymbolbutton.h</header>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>mExpressionWidget</tabstop>
@@ -237,7 +237,6 @@
  </tabstops>
  <resources>
   <include location="../../images/images.qrc"/>
-  <include location="../../images/images.qrc"/>
  </resources>
  <connections/>
 </ui>