diff --git a/include/ChangeLog b/include/ChangeLog
index 01854a404..cd5895ddb 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-14  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* mach-o/loader.h (bfd_mach_o_section_type): define
+	BFD_MACH_O_S_ATTR_NONE to 0.
+
 2011-11-07  Richard Henderson  <rth@redhat.com>
 
 	Merged from transactional-memory.
diff --git a/include/mach-o/loader.h b/include/mach-o/loader.h
index 357f65e54..296782fb5 100644
--- a/include/mach-o/loader.h
+++ b/include/mach-o/loader.h
@@ -246,6 +246,9 @@ bfd_mach_o_section_type;
 
 typedef enum bfd_mach_o_section_attribute
 {
+  /* Section has no specified attibutes.  */
+  BFD_MACH_O_S_ATTR_NONE              = 0,
+
   /* Section has local relocation entries.  */
   BFD_MACH_O_S_ATTR_LOC_RELOC         = 0x00000100,