diff --git a/src/qt/forms/coincontroldialog.ui b/src/qt/forms/coincontroldialog.ui
--- a/src/qt/forms/coincontroldialog.ui
+++ b/src/qt/forms/coincontroldialog.ui
@@ -467,12 +467,6 @@
    </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>