diff --git a/sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h b/sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h
index 6c6ccae6a5..905e87fd95 100644
--- a/sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h
+++ b/sysdeps/unix/sysv/sysv4/solaris2/bits/sigstack.h
@@ -50,6 +50,6 @@ enum
 typedef struct sigaltstack
   {
     __ptr_t ss_sp;
-    size_t ss_size;
     int ss_flags;
+    size_t ss_size;
   } stack_t;