--- a/src/eric7/MicroPython/WifiDialogs/WifiCountryDialog.ui	Wed Aug 02 17:22:20 2023 +0200
+++ b/src/eric7/MicroPython/WifiDialogs/WifiCountryDialog.ui	Thu Aug 03 17:33:07 2023 +0200
@@ -29,8 +29,11 @@
      <property name="toolTip">
       <string>Enter the country code for the WiFi interface</string>
      </property>
+     <property name="inputMask">
+      <string notr="true">&gt;AA;_</string>
+     </property>
      <property name="maxLength">
-      <number>3</number>
+      <number>2</number>
      </property>
      <property name="clearButtonEnabled">
       <bool>true</bool>