diff --git a/src/plugins/memcheck/memcheckconfigwidget.ui b/src/plugins/memcheck/memcheckconfigwidget.ui
index 016cb3254c8..f4c00471b46 100644
--- a/src/plugins/memcheck/memcheckconfigwidget.ui
+++ b/src/plugins/memcheck/memcheckconfigwidget.ui
@@ -99,6 +99,9 @@
       </item>
       <item row="2" column="1">
        <widget class="QSpinBox" name="numCallers">
+        <property name="minimum">
+         <number>5</number>
+        </property>
         <property name="maximum">
          <number>50</number>
         </property>