diff --git a/examples/psync/full_sync.py b/examples/psync/full_sync.py
index 1a54a73..d256a3b 100644
--- a/examples/psync/full_sync.py
+++ b/examples/psync/full_sync.py
@@ -35,8 +35,8 @@
     for node in ndn.net.hosts:
         for neighbor in node.connectionsTo(host):
             ip = node.IP(neighbor[0])
-            Nfdc.createFace(host, ip)
-            Nfdc.registerRoute(host, syncPrefix, ip)
+            faceID = Nfdc.createFace(host, ip)
+            Nfdc.registerRoute(host, syncPrefix, faceID)
 
 if __name__ == '__main__':
     setLogLevel('info')
diff --git a/examples/wifi/wifi_ping.py b/examples/wifi/wifi_ping.py
index 6ba0531..16fd62d 100644
--- a/examples/wifi/wifi_ping.py
+++ b/examples/wifi/wifi_ping.py
@@ -65,8 +65,8 @@
 
     info("Starting pingserver...")
     NDNPing.startPingServer(b, "/example")
-    Nfdc.createFace(a, b.IP())
-    Nfdc.registerRoute(a, "/example", b.IP())
+    faceID = Nfdc.createFace(a, b.IP())
+    Nfdc.registerRoute(a, "/example", faceID)
 
     info("Starting ping...")
     NDNPing.ping(a, "/example", nPings=10)