diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c928a14f9e..7268e6984b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-28  Mark Kettenis  <kettenis@chello.nl>
+
+	* alphanbsd-tdep.c (_initialize_alphanbsd_tdep): Register OS/ABI
+	for OpenBSD ELF.
+
 2004-09-28  Andrew Cagney  <cagney@gnu.org>
 
 	Problem identified by Paul Hilfinger.
diff --git a/gdb/alphanbsd-tdep.c b/gdb/alphanbsd-tdep.c
index 299ed3af61..ad00f98a53 100644
--- a/gdb/alphanbsd-tdep.c
+++ b/gdb/alphanbsd-tdep.c
@@ -226,6 +226,8 @@ _initialize_alphanbsd_tdep (void)
 {
   gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_NETBSD_ELF,
                           alphanbsd_init_abi);
+  gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OPENBSD_ELF,
+                          alphanbsd_init_abi);
 
   deprecated_add_core_fns (&alphanbsd_core_fns);
   deprecated_add_core_fns (&alphanbsd_elfcore_fns);