diff --git a/Modules/Visualization/MonteverdiGui/src/mvdMultiResolutionPyramidWidget.ui b/Modules/Visualization/MonteverdiGui/src/mvdMultiResolutionPyramidWidget.ui
index 88bf04e178a88c5a9a0ab6971659d38be45979e0..b9c1dd7722a3d1a823793bfbaa58be1478d48e1e 100644
--- a/Modules/Visualization/MonteverdiGui/src/mvdMultiResolutionPyramidWidget.ui
+++ b/Modules/Visualization/MonteverdiGui/src/mvdMultiResolutionPyramidWidget.ui
@@ -169,6 +169,9 @@
      <property name="toolTip">
       <string>Minimal size (in pixels) of smallest overview level</string>
      </property>
+     <property name="minimum">
+      <number>1</number>
+     </property>
     </widget>
    </item>
    <item row="3" column="0" colspan="4">