diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
index 5f218d0..dcc9976 100644
--- a/gcc/ginclude/stddef.h
+++ b/gcc/ginclude/stddef.h
@@ -24,7 +24,7 @@
 
 /* On 4.3bsd-net2, make sure ansi.h is included, so we have
    one less case to deal with in the following.  */
-#if defined (__BSD_NET2__) || defined (____386BSD____) || defined (__FreeBSD__) || defined(__NetBSD__) || defined (__ixemul__) || defined (__libnix__)
+#if defined (__BSD_NET2__) || defined (____386BSD____) || defined (__FreeBSD__) || defined(__NetBSD__) || defined (__AMIGA__)
 #include <machine/ansi.h>
 #endif