diff --git a/ChangeLog b/ChangeLog
index 5d417cb4eb..567a258cc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
+
+	[BZ #18822]
+	* sysdeps/unix/sysv/linux/sched_setaffinity.c
+	(__sched_setaffinity_new): Add libc_hidden_proto and
+	libc_hidden_def.
+
 2017-10-01  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #18822]
diff --git a/sysdeps/unix/sysv/linux/sched_setaffinity.c b/sysdeps/unix/sysv/linux/sched_setaffinity.c
index 8854e72c67..9a40b581ae 100644
--- a/sysdeps/unix/sysv/linux/sched_setaffinity.c
+++ b/sysdeps/unix/sysv/linux/sched_setaffinity.c
@@ -26,6 +26,9 @@
 
 #ifdef __NR_sched_setaffinity
 
+extern int __sched_setaffinity_new (pid_t, size_t, const cpu_set_t *);
+libc_hidden_proto (__sched_setaffinity_new)
+
 int
 __sched_setaffinity_new (pid_t pid, size_t cpusetsize, const cpu_set_t *cpuset)
 {
@@ -38,6 +41,7 @@ __sched_setaffinity_new (pid_t pid, size_t cpusetsize, const cpu_set_t *cpuset)
 
   return result;
 }
+libc_hidden_def (__sched_setaffinity_new)
 versioned_symbol (libc, __sched_setaffinity_new, sched_setaffinity,
 		  GLIBC_2_3_4);