diff --git a/backend/brminv.scm b/backend/brminv.scm
index 2a82c31..8cf5bdc 100644
--- a/backend/brminv.scm
+++ b/backend/brminv.scm
@@ -2,6 +2,10 @@
 	command-line
 	texts)
 
+(define -port- (make-parameter #f))
+(define -certificate- (make-parameter #f))
+(define -key- (make-parameter #f))
+
 (command-line
  print-help
  (-h () "This help"
@@ -18,7 +22,20 @@
 	   (exit 0))
  ""
  "Configuration options:"
+ (-p (port) "Listen port"
+     (-port- (string->number port)))
+ (-c (cert) "Certificate"
+     (-certificate- cert))
+ (-k (key) "Private key"
+     (-key- key))
  )
 
-(display "brminv")
-(newline)
+(define ssl? (and (-certificate-) (-key-) #t))
+(define port (or (-port-) (if ssl? 443 80)))
+
+(print banner-line)
+(print "Port: " port)
+(print "SSL: " ssl?)
+(when ssl?
+  (print "  Certificate:" (-certificate-))
+  (print "  Key:" (-key-)))