diff --git a/src/calibre/gui2/convert/txt_output.ui b/src/calibre/gui2/convert/txt_output.ui
index ede1698361..90ef30a8ce 100644
--- a/src/calibre/gui2/convert/txt_output.ui
+++ b/src/calibre/gui2/convert/txt_output.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>392</width>
-    <height>346</height>
+    <height>378</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -132,6 +132,19 @@
      </layout>
     </widget>
    </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
   </layout>
  </widget>
  <customwidgets>