diff --git a/app/api/routes/_blockchain.py b/app/api/routes/_blockchain.py
index cfbabba..78ae0e8 100644
--- a/app/api/routes/_blockchain.py
+++ b/app/api/routes/_blockchain.py
@@ -121,7 +121,7 @@ async def s_api_v1_blockchain_send_new_content_message(request):
                                     .store_ref(
                                         begin_cell()
                                             .store_uint(1, 8)
-                                            .store_bytes(f"{PROJECT_HOST}/api/v1/storage/{metadata_content.cid.serialize_v2()}".encode())
+                                            .store_bytes(f"{PROJECT_HOST}/api/v1/storage/{metadata_content.cid.serialize_v2(include_accept_type=True)}".encode())
                                             .end_cell()
                                     )
                                     .store_ref(