diff --git a/ChangeLog b/ChangeLog
index 262069d694..7c725856d8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2016-11-11  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/sh/sys/user.h: Include <stddef.h>.
+
 2016-11-10  Chris Metcalf  <cmetcalf@mellanox.com>
 
 	* sysdeps/tile/tilepro/atomic-machine.h (atomic_store_relaxed)
diff --git a/sysdeps/unix/sysv/linux/sh/sys/user.h b/sysdeps/unix/sysv/linux/sh/sys/user.h
index 47b87aede9..2999b03e68 100644
--- a/sysdeps/unix/sysv/linux/sh/sys/user.h
+++ b/sysdeps/unix/sysv/linux/sh/sys/user.h
@@ -19,6 +19,7 @@
 #define _SYS_USER_H	1
 
 #include <asm/ptrace.h>
+#include <stddef.h>
 
 /* asm/ptrace.h polutes the namespace.  */
 #undef PTRACE_GETREGS