diff --git a/sendxmpp b/sendxmpp
index 423ff2b..91ae1ef 100755
--- a/sendxmpp
+++ b/sendxmpp
@@ -175,13 +175,13 @@ sub read_config_file ($) { # {{{
 		}
 
 		# account with weird port number
-		if ($config{'jserver'}	=~ /(.*):(\d+)/) {
+		if (defined($config{'jserver'}) and $config{'jserver'}	=~ /(.*):(\d+)/) {
 			$config{'jserver'}	= $1;
 			$config{'port'}		= $2;
 		}
 
 		# account with specific connection host
-		if ($config{'jserver'}	=~ /(.*);([-\.\w]+)/) {
+		if (defined($config{'jserver'}) and $config{'jserver'}	=~ /(.*);([-\.\w]+)/) {
 			$config{'jserver'}	= $2;
 			$config{'username'}	.= "\@$1" unless $config{'component'};
 		}