diff --git a/Polyhedron/demo/Polyhedron/Mesh_segmentation_widget.ui b/Polyhedron/demo/Polyhedron/Mesh_segmentation_widget.ui
index 1c91dac41f4..8595f30be28 100644
--- a/Polyhedron/demo/Polyhedron/Mesh_segmentation_widget.ui
+++ b/Polyhedron/demo/Polyhedron/Mesh_segmentation_widget.ui
@@ -103,13 +103,13 @@
        <item row="1" column="1">
         <widget class="QDoubleSpinBox" name="Smoothness_spin_box">
          <property name="maximum">
-          <double>1.000000000000000</double>
+          <double>10.000000000000000</double>
          </property>
          <property name="singleStep">
           <double>0.010000000000000</double>
          </property>
          <property name="value">
-          <double>0.230000000000000</double>
+          <double>0.260000000000000</double>
          </property>
         </widget>
        </item>