diff --git a/fail2ban/save_jail.cgi b/fail2ban/save_jail.cgi
index ec4eb632f..64ebcc8ef 100755
--- a/fail2ban/save_jail.cgi
+++ b/fail2ban/save_jail.cgi
@@ -50,7 +50,10 @@ else {
 
 	# Validate ports (1234 or 1234:1245 or 1234:1245,1250,http or 1238,http,https)
 	$in{'port'} =~ s/\s+//g if ($in{'port'});
-	!$in{'port'} || $in{'port'} =~ /^(?!$)(?:[a-zA-Z]+|\d{1,5})(?:(?::\d{1,5})?)(?:,(?:[a-zA-Z]+|\d{1,5})(?:(?::\d{1,5})?)?)*$/gmi || &error($text{'jail_eports'});
+	!$in{'port'} || $in{'port'} =~
+		/^(?!$)(?:[a-zA-Z0-9]+|\d{1,5})(?::\d{1,5})?
+		(?:,\s*(?:[a-zA-Z0-9]+|\d{1,5})(?::\d{1,5})?)*$/gmix ||
+			&error($text{'jail_eports'});
 
 	# Parse and validate actions
 	my @actions;