diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 41d7dc19f3..3ff1e04235 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -18,6 +18,7 @@
  *  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  *  MA 02110-1301, USA.
  */
+#define _ATFILE_SOURCE
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdarg.h>