diff --git a/Configuration.ui b/Configuration.ui
index 7d008837d..ea03008ab 100644
--- a/Configuration.ui
+++ b/Configuration.ui
@@ -375,6 +375,12 @@ quiet period when decoding is done.</string>
             </item>
             <item row="0" column="1">
              <widget class="QComboBox" name="CAT_port_combo_box">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+                <horstretch>1</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
               <property name="toolTip">
                <string>Serial port used for CAT control.</string>
               </property>
@@ -642,6 +648,12 @@ selected above.</string>
        </item>
        <item row="1" column="2">
         <widget class="QGroupBox" name="PTT_method_group_box">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
          <property name="toolTip">
           <string>How this program activates the PTT on your radio</string>
          </property>
@@ -732,7 +744,7 @@ when hardware flow control is used.</string>
             <item row="0" column="1">
              <widget class="QComboBox" name="PTT_port_combo_box">
               <property name="sizePolicy">
-               <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+               <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
                 <horstretch>1</horstretch>
                 <verstretch>0</verstretch>
                </sizepolicy>
@@ -2017,12 +2029,12 @@ soundcard changes</string>
   </connection>
  </connections>
  <buttongroups>
-  <buttongroup name="TX_audio_source_button_group"/>
   <buttongroup name="TX_mode_button_group"/>
-  <buttongroup name="split_mode_button_group"/>
-  <buttongroup name="CAT_stop_bits_button_group"/>
+  <buttongroup name="PTT_method_button_group"/>
+  <buttongroup name="TX_audio_source_button_group"/>
   <buttongroup name="CAT_data_bits_button_group"/>
   <buttongroup name="CAT_handshake_button_group"/>
-  <buttongroup name="PTT_method_button_group"/>
+  <buttongroup name="split_mode_button_group"/>
+  <buttongroup name="CAT_stop_bits_button_group"/>
  </buttongroups>
 </ui>