diff --git a/ethermess.py b/ethermess.py
index cfcec78..bde32e6 100644
--- a/ethermess.py
+++ b/ethermess.py
@@ -111,14 +111,15 @@ class PollBasedThread(threading.Thread):
 		...
 
 class Backend(PollBasedThread):
-	def __init__(self, writes_channel, control_channel):
+	def __init__(self, interface, writes_channel, control_channel):
+		self.interface = interface
 		self.writes_channel = writes_channel
 		self.control_channel = control_channel
 		self.pollin = [self.writes_channel, self.control_channel]
 		super().__init__()
 
 	def initialize(self):
-		self.proc = subprocess.Popen(['sudo', libexec_dir + '/ethermess-backend', *sys.argv[1:]], stdin = subprocess.PIPE, stdout = sys.stdout, stderr = sys.stderr, bufsize = 0)
+		self.proc = subprocess.Popen(['sudo', libexec_dir + '/ethermess-backend', self.interface], stdin = subprocess.PIPE, stdout = sys.stdout, stderr = sys.stderr, bufsize = 0)
 
 	def poll_loop(self, fd, event):
 		if fd == self.writes_channel.fileno() and event & select.POLLIN:
@@ -180,8 +181,10 @@ class Input(threading.Thread):
 writes_channel = Channel()
 control_channel = Channel()
 
-nick = input('nick> ').encode('utf-8')
+_, interface, nick = sys.argv
+
+nick = nick.encode('utf-8')
 writes_channel.send((bytes([0, len(nick)]) + nick))
 
-Backend(writes_channel, control_channel).start()
+Backend(interface, writes_channel, control_channel).start()
 Input(writes_channel, control_channel).start()