diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 47d8417a18..26a87cb2c3 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,8 @@
+1998-08-04  Ulrich Drepper  <drepper@cygnus.com>
+
+	* sysdeps/unix/sysv/linux/bits/sigthread.h: Use __sigset_t instead
+	of sigset_t.
+
 1998-08-02  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
 
 	* Makefile (linuxthreads-version): Extract correct number from
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h b/linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h
index e3aa7178bf..7bd0974409 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h
@@ -25,8 +25,8 @@
 
 /* Modify the signal mask for the calling thread.  The arguments have
    the same meaning as for sigprocmask(2). */
-extern int pthread_sigmask __P ((int __how, __const sigset_t *__newmask,
-				 sigset_t *__oldmask));
+extern int pthread_sigmask __P ((int __how, __const __sigset_t *__newmask,
+				 __sigset_t *__oldmask));
 
 /* Send signal SIGNO to the given thread. */
 extern int pthread_kill __P ((pthread_t __thread, int __signo));