diff --git a/Samples/one-interface/interfaces b/Samples/one-interface/interfaces
index 909b5b01b..25be4cc3b 100644
--- a/Samples/one-interface/interfaces
+++ b/Samples/one-interface/interfaces
@@ -14,5 +14,5 @@
 #
 ###############################################################################
 #ZONE	INTERFACE	BROADCAST	OPTIONS
-net     eth0            detect          norfc1918,routefilter,dhcp,tcpflags,logmartians,nosmurfs
+net     eth0            detect          dhcp,tcpflags,logmartians,nosmurfs
 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
diff --git a/Samples/three-interfaces/interfaces b/Samples/three-interfaces/interfaces
index e652eac34..9f31fb72b 100644
--- a/Samples/three-interfaces/interfaces
+++ b/Samples/three-interfaces/interfaces
@@ -14,7 +14,7 @@
 #
 ###############################################################################
 #ZONE	INTERFACE	BROADCAST	OPTIONS
-net     eth0            detect          tcpflags,dhcp,routefilter,norfc1918,nosmurfs,logmartians
+net     eth0            detect          tcpflags,dhcp,routefilter,nosmurfs,logmartians
 loc     eth1            detect          tcpflags,detectnets,nosmurfs
 dmz     eth2            detect
 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE
diff --git a/Samples/two-interfaces/interfaces b/Samples/two-interfaces/interfaces
index eb8f93abe..557866ae5 100644
--- a/Samples/two-interfaces/interfaces
+++ b/Samples/two-interfaces/interfaces
@@ -14,6 +14,6 @@
 #
 ###############################################################################
 #ZONE	INTERFACE	BROADCAST	OPTIONS
-net     eth0            detect          dhcp,tcpflags,norfc1918,routefilter,nosmurfs,logmartians
+net     eth0            detect          dhcp,tcpflags,routefilter,nosmurfs,logmartians
 loc     eth1            detect          tcpflags,detectnets,nosmurfs
 #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE