diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 11bfbfcc1d2..7e7b526d370 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-22  Tristan Gingold  <gingold@adacore.com>
+
+	* mach-o.c (bfd_mach_o_canonicalize_reloc): Append a sentinel to
+	the relocs array.
+
 2009-06-22  Alan Modra  <amodra@bigpond.net.au>
 
 	* elf32-ppc.c (ppc_elf_check_relocs): Handle R_PPC_RELAX* in switch.
diff --git a/bfd/mach-o.c b/bfd/mach-o.c
index cf1d1e02394..8071dee86ae 100644
--- a/bfd/mach-o.c
+++ b/bfd/mach-o.c
@@ -615,6 +615,7 @@ bfd_mach_o_canonicalize_reloc (bfd *abfd, asection *asect,
         }
       rels[i] = &res[i];
     }
+  rels[asect->reloc_count] = NULL;
   asect->relocation = res;
   free (native_relocs);
   return i;