diff --git a/libs/editor/settings/wireguardpeerwidget.cpp b/libs/editor/settings/wireguardpeerwidget.cpp
--- a/libs/editor/settings/wireguardpeerwidget.cpp
+++ b/libs/editor/settings/wireguardpeerwidget.cpp
@@ -199,11 +199,10 @@
 
 WireGuardPeerWidget::EndPointValid WireGuardPeerWidget::isEndpointValid(QString &address, QString &port)
 {
-    // Create a Reg Expression validator to do  simple check for a valid qualified domain name
-    // which checks to see that there are between 2 and 63 strings of at least 2 characters each
-    // separated by '.', so "ab.cc" is valid but "a.cc" is not. The full string must also be less 
-    // than 255 characters long.
-    static QRegExpValidator fqdnValidator(QRegExp(QLatin1String("(?=.{5,254}$)([a-zA-Z0-9][a-zA-Z0-9-]{1,62}\\.){1,63}[a-zA-Z]{2,63}")), nullptr);
+    // Create a Reg Expression validator to do a simple check for a valid qualified domain name
+    // which checks to see that there are between 2 and 63 strings of at least 1 character each
+    // separated by '.'. The full string must also be less than 255 characters long.
+    static QRegExpValidator fqdnValidator(QRegExp(QLatin1String("(?=.{3,254}$)([a-zA-Z0-9][a-zA-Z0-9-]{0,62}\\.){1,63}[a-zA-Z]{1,63}")), nullptr);
     static SimpleIpV4AddressValidator ipv4Validator;
     static SimpleIpV6AddressValidator ipv6Validator;
     int pos = 0;