diff --git a/include/elf/ChangeLog b/include/elf/ChangeLog
index c7dc5e364..eeaa880ff 100644
--- a/include/elf/ChangeLog
+++ b/include/elf/ChangeLog
@@ -1,3 +1,7 @@
+2009-04-24  Cary Coutant  <ccoutant@google.com>
+
+	 * dwarf2.h (DW_LNE_set_discriminator): New enum value.
+
 2009-04-15  Anthony Green  <green@moxielogic.com>
 
 	* common.h (EM_MOXIE): Define.
diff --git a/include/elf/dwarf2.h b/include/elf/dwarf2.h
index f8d010b53..a7448dc7c 100644
--- a/include/elf/dwarf2.h
+++ b/include/elf/dwarf2.h
@@ -709,6 +709,7 @@ enum dwarf_line_number_x_ops
     DW_LNE_end_sequence = 1,
     DW_LNE_set_address = 2,
     DW_LNE_define_file = 3,
+    DW_LNE_set_discriminator = 4,
     /* HP extensions.  */
     DW_LNE_HP_negate_is_UV_update      = 0x11,
     DW_LNE_HP_push_context             = 0x12,