diff --git a/isoimagewriter/maindialog.ui b/isoimagewriter/maindialog.ui
index aff2ddf..9e9ed63 100644
--- a/isoimagewriter/maindialog.ui
+++ b/isoimagewriter/maindialog.ui
@@ -1,287 +1,305 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
  <class>MainDialog</class>
  <widget class="QDialog" name="MainDialog">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>628</width>
-    <height>235</height>
+    <height>221</height>
    </rect>
   </property>
   <property name="sizePolicy">
    <sizepolicy hsizetype="Preferred" vsizetype="MinimumExpanding">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
   </property>
   <property name="minimumSize">
    <size>
     <width>0</width>
     <height>0</height>
    </size>
   </property>
   <property name="maximumSize">
    <size>
     <width>16777215</width>
     <height>16777215</height>
    </size>
   </property>
   <property name="acceptDrops">
    <bool>true</bool>
   </property>
   <property name="windowTitle">
    <string notr="true">ISO Image Writer</string>
   </property>
   <property name="sizeGripEnabled">
    <bool>true</bool>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <layout class="QHBoxLayout" name="titleHorizontalLayout">
      <property name="sizeConstraint">
       <enum>QLayout::SetDefaultConstraint</enum>
      </property>
      <item>
       <widget class="QLabel" name="logo">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string/>
        </property>
        <property name="margin">
         <number>0</number>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QLabel" name="introLabel">
        <property name="text">
         <string/>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>40</width>
          <height>20</height>
         </size>
        </property>
       </spacer>
      </item>
     </layout>
    </item>
    <item>
     <layout class="QGridLayout" name="gridLayout">
+     <property name="spacing">
+      <number>6</number>
+     </property>
      <item row="0" column="0">
       <widget class="QLabel" name="imageLabel">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="text">
         <string>Image:</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
        </property>
       </widget>
      </item>
      <item row="0" column="1">
       <widget class="QLineEdit" name="imageEdit">
        <property name="acceptDrops">
         <bool>false</bool>
        </property>
        <property name="dragEnabled">
         <bool>true</bool>
        </property>
        <property name="readOnly">
         <bool>true</bool>
        </property>
       </widget>
      </item>
      <item row="0" column="2">
       <widget class="QPushButton" name="imageSelectButton">
        <property name="toolTip">
         <string>Open image file</string>
        </property>
        <property name="text">
         <string/>
        </property>
       </widget>
      </item>
      <item row="1" column="1">
       <widget class="QWidget" name="widget_2" native="true">
        <layout class="QHBoxLayout" name="horizontalLayout_2">
+        <property name="spacing">
+         <number>0</number>
+        </property>
+        <property name="leftMargin">
+         <number>0</number>
+        </property>
+        <property name="topMargin">
+         <number>0</number>
+        </property>
+        <property name="rightMargin">
+         <number>0</number>
+        </property>
+        <property name="bottomMargin">
+         <number>0</number>
+        </property>
         <item>
          <spacer name="horizontalSpacer_2">
           <property name="orientation">
            <enum>Qt::Horizontal</enum>
           </property>
           <property name="sizeHint" stdset="0">
            <size>
             <width>0</width>
             <height>0</height>
            </size>
           </property>
          </spacer>
         </item>
         <item>
          <widget class="QLabel" name="verificationResultLabel">
           <property name="text">
            <string/>
           </property>
          </widget>
         </item>
        </layout>
       </widget>
      </item>
      <item row="2" column="0">
       <widget class="QLabel" name="deviceLabel">
        <property name="text">
         <string>&amp;USB Device:</string>
        </property>
        <property name="alignment">
         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
        </property>
        <property name="buddy">
         <cstring>deviceList</cstring>
        </property>
       </widget>
      </item>
      <item row="2" column="1">
       <widget class="QComboBox" name="deviceList">
        <property name="duplicatesEnabled">
         <bool>true</bool>
        </property>
       </widget>
      </item>
      <item row="2" column="2">
       <widget class="QPushButton" name="deviceRefreshButton">
        <property name="toolTip">
         <string>Refresh the list</string>
        </property>
        <property name="text">
         <string/>
        </property>
       </widget>
      </item>
     </layout>
    </item>
    <item>
     <spacer name="verticalSpacer">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
      </property>
      <property name="sizeType">
       <enum>QSizePolicy::Expanding</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>20</width>
        <height>1</height>
       </size>
      </property>
     </spacer>
    </item>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QProgressBar" name="progressBar">
        <property name="value">
         <number>0</number>
        </property>
        <property name="format">
         <string>%v / %m MiB</string>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="progressBarSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeType">
         <enum>QSizePolicy::Minimum</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>0</width>
          <height>10</height>
         </size>
        </property>
       </spacer>
      </item>
     </layout>
    </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="standardButtons">
       <set>QDialogButtonBox::Cancel|QDialogButtonBox::Reset|QDialogButtonBox::Yes</set>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <tabstops>
   <tabstop>imageEdit</tabstop>
   <tabstop>imageSelectButton</tabstop>
   <tabstop>deviceList</tabstop>
  </tabstops>
  <resources>
   <include location="RosaImageWriter.qrc"/>
  </resources>
  <connections>
   <connection>
    <sender>imageSelectButton</sender>
    <signal>clicked()</signal>
    <receiver>MainDialog</receiver>
    <slot>openImageFile()</slot>
    <hints>
     <hint type="sourcelabel">
      <x>678</x>
      <y>68</y>
     </hint>
     <hint type="destinationlabel">
      <x>425</x>
      <y>7</y>
     </hint>
    </hints>
   </connection>
   <connection>
    <sender>deviceRefreshButton</sender>
    <signal>clicked()</signal>
    <receiver>MainDialog</receiver>
    <slot>scheduleEnumFlashDevices()</slot>
    <hints>
     <hint type="sourcelabel">
      <x>678</x>
      <y>108</y>
     </hint>
     <hint type="destinationlabel">
      <x>425</x>
      <y>18</y>
     </hint>
    </hints>
   </connection>
  </connections>
  <slots>
   <slot>openImageFile()</slot>
   <slot>writeImageToDevice()</slot>
   <slot>scheduleEnumFlashDevices()</slot>
   <slot>clearDevice()</slot>
  </slots>
 </ui>