diff --git a/ChangeLog b/ChangeLog
index bf96c17a..45c2bfb1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+1999-05-25  Martin Baulig  <martin@home-of-linux.org>
+
+	* libgtop-sysdeps.m4: Make the I4B check work for NetBSD.
+
 1999-05-16  Martin Baulig  <martin@home-of-linux.org>
 
 	* doc: Merged the LibGTop Manual from the HEAD.
diff --git a/libgtop-sysdeps.m4 b/libgtop-sysdeps.m4
index a055e53a..49910774 100644
--- a/libgtop-sysdeps.m4
+++ b/libgtop-sysdeps.m4
@@ -177,7 +177,7 @@ AC_DEFUN([GNOME_LIBGTOP_SYSDEPS],[
 #include <net/netisr.h>
 #include <net/route.h>
 
-#ifdef __FreeBSD__
+#if (defined __FreeBSD__) || (defined __NetBSD__)
 #include <net/if_sppp.h>
 #else
 #include <i4b/sppp/if_sppp.h>
@@ -203,7 +203,7 @@ AC_DEFUN([GNOME_LIBGTOP_SYSDEPS],[
 #include <net/netisr.h>
 #include <net/route.h>
 
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__NetBSD__)
 #include <net/if_sppp.h>
 #else
 #include <i4b/sppp/if_sppp.h>
diff --git a/sysdeps/freebsd/ChangeLog b/sysdeps/freebsd/ChangeLog
index 05ef11c6..7503cc43 100644
--- a/sysdeps/freebsd/ChangeLog
+++ b/sysdeps/freebsd/ChangeLog
@@ -1,3 +1,7 @@
+1999-05-25  Martin Baulig  <martin@home-of-linux.org>
+
+	* ppp.c: Make this work on NetBSD.
+
 Thu Apr  8 23:47:29 1999  Timur Bakeyev  <timur@gnu.org>
 
  	* cpu.c, mem.c, netload.c, procargs.c, procstate.c, proctime.c,
diff --git a/sysdeps/freebsd/ppp.c b/sysdeps/freebsd/ppp.c
index 093148a1..8b3bdfe0 100644
--- a/sysdeps/freebsd/ppp.c
+++ b/sysdeps/freebsd/ppp.c
@@ -39,7 +39,7 @@
 #include <net/netisr.h>
 #include <net/route.h>
 
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__NetBSD__)
 #include <net/if_sppp.h>
 #else
 #include <i4b/sppp/if_sppp.h>