diff --git a/pySim-prog.py b/pySim-prog.py
index 5e5f063..650d8ea 100755
--- a/pySim-prog.py
+++ b/pySim-prog.py
@@ -62,6 +62,9 @@
 			help="Card type (user -t list to view) [default: %default]",
 			default="auto",
 		)
+	parser.add_option("-a", "--pin-adm", dest="pin_adm",
+			help="ADM PIN used for provisioning (overwrites default)",
+		)
 	parser.add_option("-e", "--erase", dest="erase", action='store_true',
 			help="Erase beforehand [default: %default]",
 			default=False,
@@ -249,7 +252,7 @@
 	return b2h(strxor(opc_bytes, h2b(op_hex)))
 
 def gen_parameters(opts):
-	"""Generates Name, ICCID, MCC, MNC, IMSI, SMSP, Ki from the
+	"""Generates Name, ICCID, MCC, MNC, IMSI, SMSP, Ki, PIN-ADM from the
 	options given by the user"""
 
 	# MCC/MNC
@@ -374,6 +377,14 @@
 	else:
 		opc = ''.join(['%02x' % random.randrange(0,256) for i in range(16)])
 
+	if opts.pin_adm is not None:
+		if len(opts.pin_adm) > 8:
+			raise ValueError("PIN-ADM needs to be <=8 digits")
+		pin_adm = ''.join(['%02x'%(ord(x)) for x in opts.pin_adm])
+		pin_adm = rpad(pin_adm, 16)
+	else:
+		pin_adm = None
+
 
 	# Return that
 	return {
@@ -386,6 +397,7 @@
 		'ki'	: ki,
 		'opc'	: opc,
 		'acc'	: acc,
+		'pin_adm' : pin_adm,
 	}
 
 
diff --git a/pySim/cards.py b/pySim/cards.py
index 4456abc..27083be 100644
--- a/pySim/cards.py
+++ b/pySim/cards.py
@@ -264,7 +264,11 @@
 		#self._scc.verify_chv(4, h2b("4444444444444444"))
 
 		# Authenticate using ADM PIN 5
-		self._scc.verify_chv(5, h2b("4444444444444444"))
+		if p['pin_adm']:
+			pin = p['pin_adm']
+		else:
+			pin = h2b("4444444444444444")
+		self._scc.verify_chv(5, pin)
 
 		# EF.ICCID
 		r = self._scc.select_file(['3f00', '2fe2'])
@@ -365,11 +369,17 @@
 		# P1: 3A for PIN, 3B for PUK
 		# P2: CHV number, as in VERIFY CHV for PIN, and as in UNBLOCK CHV for PUK
 		# P3: 08, CHV length (curiously the PUK is also 08 length, instead of 10)
-		pdu = 'A0D43A0508' + "4444444444444444"
+		if p['pin_adm']:
+			pin = p['pin_adm']
+		else:
+			pin = h2b("4444444444444444")
+
+		pdu = 'A0D43A0508' + b2h(pin)
 		data, sw = self._scc._tp.send_apdu(pdu)
 		
 		# authenticate as ADM (enough to write file, and can set PINs)
-		self._scc.verify_chv(0x05, h2b("4444444444444444"))
+
+		self._scc.verify_chv(0x05, pin)
 
 		# write EF.ICCID
 		data, sw = self._scc.update_binary('2fe2', enc_iccid(p['iccid']))