diff --git a/planetstack/observer/steps/sync_network_slivers.py b/planetstack/observer/steps/sync_network_slivers.py
index 4466174..a803053 100644
--- a/planetstack/observer/steps/sync_network_slivers.py
+++ b/planetstack/observer/steps/sync_network_slivers.py
@@ -5,71 +5,71 @@
 from core.models.network import *
 
 class SyncNetworkSlivers(OpenStackSyncStep):
-	requested_interval = 3600
-	provides=[NetworkSliver]
+    requested_interval = 3600
+    provides=[NetworkSliver]
 
-	def call(self):
-		networkSlivers = NetworkSliver.objects.all()
-		networkSlivers_by_id = {}
-		networkSlivers_by_port = {}
-		for networkSliver in networkSlivers:
-			networkSlivers_by_id[networkSliver.id] = networkSliver
-			networkSlivers_by_port[networkSliver.port_id] = networkSliver
+    def call(self):
+        networkSlivers = NetworkSliver.objects.all()
+        networkSlivers_by_id = {}
+        networkSlivers_by_port = {}
+        for networkSliver in networkSlivers:
+            networkSlivers_by_id[networkSliver.id] = networkSliver
+            networkSlivers_by_port[networkSliver.port_id] = networkSliver
 
-		networks = Network.objects.all()
-		networks_by_id = {}
-		for network in networks:
-			networks_by_id[network.network_id] = network
+        networks = Network.objects.all()
+        networks_by_id = {}
+        for network in networks:
+            networks_by_id[network.network_id] = network
 
-		slivers = Sliver.objects.all()
-		slivers_by_instance_id = {}
-		for sliver in slivers:
-			slivers_by_instance_id[sliver.instance_id] = sliver
+        slivers = Sliver.objects.all()
+        slivers_by_instance_id = {}
+        for sliver in slivers:
+            slivers_by_instance_id[sliver.instance_id] = sliver
 
-		ports = self.driver.shell.quantum.list_ports()["ports"]
-		for port in ports:
-			if port["id"] in networkSlivers_by_port:
-				# we already have it
-				print "already accounted for port", port["id"]
-				continue
+        ports = self.driver.shell.quantum.list_ports()["ports"]
+        for port in ports:
+            if port["id"] in networkSlivers_by_port:
+                # we already have it
+                print "already accounted for port", port["id"]
+                continue
 
-			if port["device_owner"] != "compute:nova":
-				# we only want the ports that connect to instances
-				continue
+            if port["device_owner"] != "compute:nova":
+                # we only want the ports that connect to instances
+                continue
 
-			network = networks_by_id.get(port['network_id'], None)
-			if not network:
-				#print "no network for port", port["id"], "network", port["network_id"]
-				continue
+            network = networks_by_id.get(port['network_id'], None)
+            if not network:
+                #print "no network for port", port["id"], "network", port["network_id"]
+                continue
 
-			sliver = slivers_by_instance_id.get(port['device_id'], None)
-			if not sliver:
-				print "no sliver for port", port["id"], "device_id", port['device_id']
-				continue
+            sliver = slivers_by_instance_id.get(port['device_id'], None)
+            if not sliver:
+                print "no sliver for port", port["id"], "device_id", port['device_id']
+                continue
 
-			if network.template.sharedNetworkId is not None:
-				# If it's a shared network template, then more than one network
-				# object maps to the quantum network. We have to do a whole bunch
-				# of extra work to find the right one.
-				networks = network.template.network_set.all()
-				network = None
-				for candidate_network in networks:
-					if (candidate_network.owner == sliver.slice):
-						print "found network", candidate_network
-						network = candidate_network
+            if network.template.sharedNetworkId is not None:
+                # If it's a shared network template, then more than one network
+                # object maps to the quantum network. We have to do a whole bunch
+                # of extra work to find the right one.
+                networks = network.template.network_set.all()
+                network = None
+                for candidate_network in networks:
+                    if (candidate_network.owner == sliver.slice):
+                        print "found network", candidate_network
+                        network = candidate_network
 
-				if not network:
-					print "failed to find the correct network for a shared template for port", port["id"], "network", port["network_id"]
-					continue
+                if not network:
+                    print "failed to find the correct network for a shared template for port", port["id"], "network", port["network_id"]
+                    continue
 
-			if not port["fixed_ips"]:
-				print "port", port["id"], "has no fixed_ips"
-				continue
+            if not port["fixed_ips"]:
+                print "port", port["id"], "has no fixed_ips"
+                continue
 
-#			 print "XXX", port
+#             print "XXX", port
 
-			ns = NetworkSliver(network=network,
-							   sliver=sliver,
-							   ip=port["fixed_ips"][0]["ip_address"],
-							   port_id=port["id"])
-			ns.save()
+            ns = NetworkSliver(network=network,
+                               sliver=sliver,
+                               ip=port["fixed_ips"][0]["ip_address"],
+                               port_id=port["id"])
+            ns.save()