diff --git a/bin/ovpn_genconfig b/bin/ovpn_genconfig
index 059e9d0..a5c4c05 100755
--- a/bin/ovpn_genconfig
+++ b/bin/ovpn_genconfig
@@ -92,7 +92,7 @@ done
 
 
 # Server name is in the form "udp://vpn.example.com:1194"
-if [[ "$OVPN_SERVER_URL" =~ ^((udp|tcp)://)?([0-9a-zA-Z\.]+)(:([0-9]+))?$ ]]; then
+if [[ "$OVPN_SERVER_URL" =~ ^((udp|tcp)://)?([0-9a-zA-Z\.\-]+)(:([0-9]+))?$ ]]; then
     OVPN_PROTO=${BASH_REMATCH[2]};
     OVPN_CN=${BASH_REMATCH[3]};
     OVPN_PORT=${BASH_REMATCH[5]};