diff --git a/brmd/brmd.pl b/brmd/brmd.pl
index b47ea15..ae5b6cd 100755
--- a/brmd/brmd.pl
+++ b/brmd/brmd.pl
@@ -9,7 +9,7 @@ use POE;
 our $channel = "#brmlab";
 our $streamurl = "http://nat.brmlab.cz:8090/brmstream.asf";
 our $devdoor = $ARGV[0]; $devdoor ||= "/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A700e1qB-if00-port0";
-our $devasign = $ARGV[0]; $devasign ||= "/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0";
+our $devasign = $ARGV[1]; $devasign ||= "/dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0";
 our ($status, $streaming, $topic) = (0, 0, 'BRMLAB OPEN');
 
 my $irc = brmd::IRC->new();