diff --git a/ChangeLog b/ChangeLog
index 0600968d6a..5dad3dc1f2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-02  Joseph Myers  <joseph@codesourcery.com>
+
+	* include/sys/syslog.h [_ISOMAC]: Disable all contents of file
+	except include of <misc/sys/syslog.h>.
+
 2012-11-01  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: If the
diff --git a/include/sys/syslog.h b/include/sys/syslog.h
index c08cfcd1fa..3be3189ed1 100644
--- a/include/sys/syslog.h
+++ b/include/sys/syslog.h
@@ -1,5 +1,6 @@
 #include <misc/sys/syslog.h>
 
+#ifndef _ISOMAC
 libc_hidden_proto (syslog)
 libc_hidden_proto (vsyslog)
 
@@ -7,3 +8,4 @@ extern void __vsyslog_chk (int __pri, int __flag, const char *__fmt,
 			   __gnuc_va_list __ap)
      __attribute__ ((__format__ (__printf__, 3, 0)));
 libc_hidden_proto (__vsyslog_chk)
+#endif