diff --git a/src/Mod/TechDraw/Gui/TaskCustomizeFormat.ui b/src/Mod/TechDraw/Gui/TaskCustomizeFormat.ui
index 1a5e5d69e4..1dbac42ba3 100644
--- a/src/Mod/TechDraw/Gui/TaskCustomizeFormat.ui
+++ b/src/Mod/TechDraw/Gui/TaskCustomizeFormat.ui
@@ -6,10 +6,22 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>489</width>
-    <height>533</height>
+    <width>200</width>
+    <height>622</height>
    </rect>
   </property>
+  <property name="minimumSize">
+   <size>
+    <width>200</width>
+    <height>0</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>16777215</width>
+    <height>16777215</height>
+   </size>
+  </property>
   <property name="windowTitle">
    <string>Format Symbols</string>
   </property>