diff --git a/pack-objects.c b/pack-objects.c
index e7cd337bee..ce33b8906e 100644
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -119,8 +119,7 @@ static void prepare_in_pack_by_idx(struct packing_data *pdata)
  * this fall back code, just stay simple and fall back to using
  * in_pack[] array.
  */
-void oe_map_new_pack(struct packing_data *pack,
-		     struct packed_git *p)
+void oe_map_new_pack(struct packing_data *pack)
 {
 	uint32_t i;
 
diff --git a/pack-objects.h b/pack-objects.h
index 6bfacc7d2c..6fde7ce27c 100644
--- a/pack-objects.h
+++ b/pack-objects.h
@@ -247,14 +247,14 @@ static inline struct packed_git *oe_in_pack(const struct packing_data *pack,
 		return pack->in_pack[e - pack->objects];
 }
 
-void oe_map_new_pack(struct packing_data *pack,
-		     struct packed_git *p);
+void oe_map_new_pack(struct packing_data *pack);
+
 static inline void oe_set_in_pack(struct packing_data *pack,
 				  struct object_entry *e,
 				  struct packed_git *p)
 {
 	if (!p->index)
-		oe_map_new_pack(pack, p);
+		oe_map_new_pack(pack);
 	if (pack->in_pack_by_idx)
 		e->in_pack_idx = p->index;
 	else