diff --git a/object-file.c b/object-file.c
index a8be899..fb5a385 100644
--- a/object-file.c
+++ b/object-file.c
@@ -1616,7 +1616,7 @@ static int do_oid_object_info_extended(struct repository *r,
 		return 0;
 	rtype = packed_object_info(r, e.p, e.offset, oi);
 	if (rtype < 0) {
-		mark_bad_packed_object(e.p, real->hash);
+		mark_bad_packed_object(e.p, real);
 		return do_oid_object_info_extended(r, real, oi, 0);
 	} else if (oi->whence == OI_PACKED) {
 		oi->u.packed.offset = e.offset;
diff --git a/packfile.c b/packfile.c
index 4d0d625..fb15fc5 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1161,17 +1161,17 @@ int unpack_object_header(struct packed_git *p,
 	return type;
 }
 
-void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1)
+void mark_bad_packed_object(struct packed_git *p, const struct object_id *oid)
 {
 	unsigned i;
 	const unsigned hashsz = the_hash_algo->rawsz;
 	for (i = 0; i < p->num_bad_objects; i++)
-		if (hasheq(sha1, p->bad_object_sha1 + hashsz * i))
+		if (hasheq(oid->hash, p->bad_object_sha1 + hashsz * i))
 			return;
 	p->bad_object_sha1 = xrealloc(p->bad_object_sha1,
 				      st_mult(GIT_MAX_RAWSZ,
 					      st_add(p->num_bad_objects, 1)));
-	hashcpy(p->bad_object_sha1 + hashsz * p->num_bad_objects, sha1);
+	hashcpy(p->bad_object_sha1 + hashsz * p->num_bad_objects, oid->hash);
 	p->num_bad_objects++;
 }
 
@@ -1272,7 +1272,7 @@ static int retry_bad_packed_offset(struct repository *r,
 	if (offset_to_pack_pos(p, obj_offset, &pos) < 0)
 		return OBJ_BAD;
 	nth_packed_object_id(&oid, p, pack_pos_to_index(p, pos));
-	mark_bad_packed_object(p, oid.hash);
+	mark_bad_packed_object(p, &oid);
 	type = oid_object_info(r, &oid, NULL);
 	if (type <= OBJ_NONE)
 		return OBJ_BAD;
@@ -1722,7 +1722,7 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset,
 				nth_packed_object_id(&oid, p, index_pos);
 				error("bad packed object CRC for %s",
 				      oid_to_hex(&oid));
-				mark_bad_packed_object(p, oid.hash);
+				mark_bad_packed_object(p, &oid);
 				data = NULL;
 				goto out;
 			}
@@ -1811,7 +1811,7 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset,
 				      " at offset %"PRIuMAX" from %s",
 				      oid_to_hex(&base_oid), (uintmax_t)obj_offset,
 				      p->pack_name);
-				mark_bad_packed_object(p, base_oid.hash);
+				mark_bad_packed_object(p, &base_oid);
 				base = read_object(r, &base_oid, &type, &base_size);
 				external_base = base;
 			}
diff --git a/packfile.h b/packfile.h
index 3ae117a..a982ed9 100644
--- a/packfile.h
+++ b/packfile.h
@@ -159,7 +159,7 @@ int packed_object_info(struct repository *r,
 		       struct packed_git *pack,
 		       off_t offset, struct object_info *);
 
-void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
+void mark_bad_packed_object(struct packed_git *, const struct object_id *);
 const struct packed_git *has_packed_and_bad(struct repository *r, const unsigned char *sha1);
 
 #define ON_DISK_KEEP_PACKS 1