diff --git a/oscar/preferencesdialog.ui b/oscar/preferencesdialog.ui
index 4a5507fc..53c9403b 100644
--- a/oscar/preferencesdialog.ui
+++ b/oscar/preferencesdialog.ui
@@ -19,6 +19,12 @@
     <verstretch>0</verstretch>
    </sizepolicy>
   </property>
+  <property name="minimumSize">
+   <size>
+    <width>145</width>
+    <height>0</height>
+   </size>
+  </property>
   <property name="windowTitle">
    <string>Preferences</string>
   </property>