diff --git a/object.h b/object.h
index 9293e703cc..99b9c8f114 100644
--- a/object.h
+++ b/object.h
@@ -81,6 +81,7 @@ void object_array_init(struct object_array *array);
  * reflog.c:                           10--12
  * builtin/show-branch.c:    0-------------------------------------------26
  * builtin/unpack-objects.c:                                 2021
+ * pack-bitmap.h:                                                22
  */
 #define FLAG_BITS  28