diff --git a/siprun b/siprun
index f74e0ed..d41a828 100755
--- a/siprun
+++ b/siprun
@@ -2,74 +2,46 @@
 
 import sys
 import getopt
+import argparse
 from lmwsip import LmwSip
 
-def usage():
-    print("siprun [-H] [-s] [-d <date>] [-t <time>] [-h <host>] [-p <port>] [<files>]")
-    print("\t-H: Show usage")
-    print("\t-s: SSL connection")
-    print("\t-d <date>: Date replacement string (2019-02-14)")
-    print("\t-t <time>: Time replacement string (17:00)")
-    print("\t-h <host>: Connect to host")
-    print("\t-p <port>: Connect to port")
-    print("\t-<files>: LMW commando files")
-
 def main():
+    lastTime=LmwSip.lasttime(None, "H10")
+    parser = argparse.ArgumentParser(description="Run a sip file.")
+    parser.add_argument("-u", "--unencrypted", action="store_true",
+                        help="Run a sip connection without ssl")
+    parser.add_argument("-H", "--host", action='store',
+                        default="sip-lmw.rws.nl",
+                        help="Host to connect to")
+    parser.add_argument("-p", "--port", action='store', type=int, default=443,
+                        help="Port to connect to")
+    parser.add_argument("-d", "--date", action='store',
+                        default=lastTime["day"],
+                        help="Date replacement string [DD-MM-YYYY]")
+    parser.add_argument("-t", "--time", action='store',
+                        default=lastTime["time_of_day"],
+                        help="Time replacement string [HH:MM]")
+    parser.add_argument("files", type=argparse.FileType('r'), nargs="+",
+                        help="Sip files to run")
+    args = parser.parse_args()
+
     try:
-        opts, args = getopt.getopt(sys.argv[1:], "sh:p:d:t:", ["help", "output="])
-    except getopt.GetoptError as err:
-        # print help information and exit:
-        print(err)  # will print something like "option -a not recognized"
-        usage()
-        sys.exit(2)
-    ssl=False
-    time=None
-    date=None
-    host=None
-    port=None
-    for o, a in opts:
-        if o == "-H":
-            usage()
-            sys.exit(0)
-        elif o == "-s":
-            ssl=True
-        elif o == "-d":
-            date=a
-        elif o == "-t":
-            time=a
-        elif o == "-h":
-            host=a
-        elif o == "-p":
-            port=a
-    if (host==None or port==None):
-        print("Set host and port")
-        usage()
-        sys.exit(3)
-    try:
-        lmwsip = LmwSip(ssl=ssl, host=host, port=port)
+        lmwsip = LmwSip(host=args.host, port=args.port,
+                        ssl=not args.unencrypted)
     except Exception as e:
         print("Connect to lmw failed: %s" % e)
         exit(1)
-    if (date == None or time == None):
-        # We assume a 10 minut interval so we use H10
-        r = lmwsip.lasttime("H10")
-        if (date == None):
-            date = r["day"]
-        if (time == None):
-            time = r["time_of_day"]
-    for cmdfile in args:
-        with open(cmdfile, "r") as f:
-            for cmd in f:
-                cmd = cmd.replace('{DATE}', date)
-                cmd = cmd.replace('{TIME}', time)
-                cmd = cmd.replace('\n', '\r')
-                print("> [%s]" % (cmd.strip('\r')))
-                try:
-                    lmwsip.send(cmd)
-                    print("< [%s]" % (lmwsip.recv().strip('\r')))
-                except:
-                    pass
-            f.close()
+    for f in args.files:
+        for cmd in f:
+            cmd = cmd.replace('{DATE}', args.date)
+            cmd = cmd.replace('{TIME}', args.time)
+            cmd = cmd.replace('\n', '\r')
+            print("> [%s]" % (cmd.strip('\r')))
+            try:
+                lmwsip.send(cmd)
+                print("< [%s]" % (lmwsip.recv().strip('\r')))
+            except:
+                pass
 
 if __name__ == "__main__":
     main()