diff --git a/Shorewall/rfc1918 b/Shorewall/rfc1918
index b70d5c1e8..be07cb894 100644
--- a/Shorewall/rfc1918
+++ b/Shorewall/rfc1918
@@ -53,7 +53,6 @@
 88.0.0.0/5		logdrop		# Reserved
 96.0.0.0/3		logdrop		# Reserved
 197.0.0.0/8		logdrop		# Reserved
-221.0.0.0/8		logdrop		# Reserved
 222.0.0.0/7		logdrop		# Reserved
 240.0.0.0/4		logdrop		# Reserved
 #