diff --git a/libnetutil/netutil.cc b/libnetutil/netutil.cc
index f633e5e47..d1d3f18a3 100644
--- a/libnetutil/netutil.cc
+++ b/libnetutil/netutil.cc
@@ -112,18 +112,18 @@
 #include <netinet/in.h>
 #endif
 
-#ifndef NETINET_IN_SYSTEM_H  /* why the HELL does OpenBSD not do this? */
+#ifndef NETINET_IN_SYSTM_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/in_systm.h>
-#define NETINET_IN_SYSTEM_H
+#define NETINET_IN_SYSTM_H
 #endif
 
 #if HAVE_NET_IF_H
-#ifndef NET_IF_H /* why doesn't OpenBSD do this? */
+#ifndef NET_IF_H /* This guarding is needed for at least some versions of OpenBSD */
 #include <net/if.h>
 #define NET_IF_H
 #endif
 #endif
-#ifndef NETINET_IP_H  /* why does OpenBSD not do this? */
+#ifndef NETINET_IP_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/ip.h> 
 #define NETINET_IP_H
 #endif
diff --git a/nmap.h b/nmap.h
index da293bfd6..f14ca4a8b 100644
--- a/nmap.h
+++ b/nmap.h
@@ -204,11 +204,11 @@ void *realloc();
 #include <pwd.h>
 #endif
 
-#ifndef NETINET_IN_SYSTEM_H  /* why does OpenBSD not do this? */
+#ifndef NETINET_IN_SYSTM_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/in_systm.h> /* defines n_long needed for netinet/ip.h */
-#define NETINET_IN_SYSTEM_H
+#define NETINET_IN_SYSTM_H
 #endif
-#ifndef NETINET_IP_H  /* why does OpenBSD not do this? */
+#ifndef NETINET_IP_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/ip.h> 
 #define NETINET_IP_H
 #endif
diff --git a/tcpip.h b/tcpip.h
index 743af706f..da78c9e2a 100644
--- a/tcpip.h
+++ b/tcpip.h
@@ -165,11 +165,11 @@ void *realloc();
 #endif
 
 #include <arpa/inet.h>
-#ifndef NETINET_IN_SYSTEM_H  /* why the HELL does OpenBSD not do this? */
+#ifndef NETINET_IN_SYSTM_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/in_systm.h> /* defines n_long needed for netinet/ip.h */
-#define NETINET_IN_SYSTEM_H
+#define NETINET_IN_SYSTM_H
 #endif
-#ifndef NETINET_IP_H  /* why the HELL does OpenBSD not do this? */
+#ifndef NETINET_IP_H  /* This guarding is needed for at least some versions of OpenBSD */
 #include <netinet/ip.h>
 #define NETINET_IP_H
 #endif