diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8b4bcc00dd..3661cffb3b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2009-02-07  Pedro Alves  <pedro@codesourcery.com>
+
+	* linux-nat.c (PTRACE_SETSIGINFO): Define if PTRACE_GETSIGINFO
+	isn't defined.
+
 2009-02-06  Pedro Alves  <pedro@codesourcery.com>
 
 	* amd64-linux-nat.c (compat_int_t, compat_uptr_t, compat_time_t)
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index a54ebb4564..adb763a6b2 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -194,7 +194,8 @@ blocked.  */
 #endif
 
 #ifndef PTRACE_GETSIGINFO
-#define PTRACE_GETSIGINFO    0x4202
+# define PTRACE_GETSIGINFO    0x4202
+# define PTRACE_SETSIGINFO    0x4203
 #endif
 
 /* The single-threaded native GNU/Linux target_ops.  We save a pointer for