diff --git a/docker/dash-listen.py b/docker/dash-listen.py
index b305c1a..f9078bf 100644
--- a/docker/dash-listen.py
+++ b/docker/dash-listen.py
@@ -11,17 +11,25 @@
 #URL_CALLBACK=os.environ.get('URL_CALLBACK')
 
 def arp_display(pkt):
-  if pkt[ARP].op == 1: #who-has (request)
-    if pkt[ARP].psrc == '0.0.0.0': # ARP Probe
-      if pkt[ARP].hwsrc == DASH_MAC_ADDRESS:
-        #requests.get(URL_CALLBACK)
+	if pkt[ARP].op == 1: #who-has (request)
+		if pkt[ARP].psrc == '0.0.0.0': # ARP Probe
+			if pkt[ARP].hwsrc == DASH_MAC_ADDRESS:
+				#requests.get(URL_CALLBACK)
 				print "ARP from " + pkt[ARP].hwsrc
-      else:
-        print "ARP Probe from unknown device: " + pkt[ARP].hwsrc
+			else:
+				print "ARP Probe from unknown device: " + pkt[ARP].hwsrc
+			# end if
+		# end if
+	# end if
+# end apr_display
 
 
 while True:
-    try:
-        print sniff(prn=arp_display, filter="arp", store=0, count=10)
-    except:
-        pass
+	try:
+		print "start"
+		print sniff(prn=arp_display, filter="arp", store=0, count=10)
+	except:
+		pass
+	# end try
+# end while
+