diff --git a/src/netaddress.h b/src/netaddress.h
--- a/src/netaddress.h
+++ b/src/netaddress.h
@@ -57,7 +57,7 @@
     bool IsIPv6() const;
     // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
     bool IsRFC1918() const;
-    // IPv4 inter-network communications (192.18.0.0/15)
+    // IPv4 inter-network communications (198.18.0.0/15)
     bool IsRFC2544() const;
     // IPv4 ISP-level NAT (100.64.0.0/10)
     bool IsRFC6598() const;
diff --git a/src/test/netbase_tests.cpp b/src/test/netbase_tests.cpp
--- a/src/test/netbase_tests.cpp
+++ b/src/test/netbase_tests.cpp
@@ -51,6 +51,8 @@
     BOOST_CHECK(ResolveIP("10.0.0.1").IsRFC1918());
     BOOST_CHECK(ResolveIP("192.168.1.1").IsRFC1918());
     BOOST_CHECK(ResolveIP("172.31.255.255").IsRFC1918());
+    BOOST_CHECK(ResolveIP("198.18.0.0").IsRFC2544());
+    BOOST_CHECK(ResolveIP("198.19.255.255").IsRFC2544());
     BOOST_CHECK(ResolveIP("2001:0DB8::").IsRFC3849());
     BOOST_CHECK(ResolveIP("169.254.1.1").IsRFC3927());
     BOOST_CHECK(ResolveIP("2002::1").IsRFC3964());