diff --git a/src/qt/qt_mainwindow.ui b/src/qt/qt_mainwindow.ui
index 69197d015..60b77d290 100644
--- a/src/qt/qt_mainwindow.ui
+++ b/src/qt/qt_mainwindow.ui
@@ -15,7 +15,7 @@
   </property>
   <widget class="QWidget" name="centralwidget">
    <property name="sizePolicy">
-    <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+    <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
      <horstretch>0</horstretch>
      <verstretch>0</verstretch>
     </sizepolicy>
@@ -37,7 +37,14 @@
      <number>0</number>
     </property>
     <item>
-     <widget class="RendererStack" name="stackedWidget"/>
+     <widget class="RendererStack" name="stackedWidget">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+     </widget>
     </item>
    </layout>
   </widget>