diff --git a/listings/ch01-advanced-concepts/struct_as_mapping_key/src/contract.cairo b/listings/ch01-advanced-concepts/struct_as_mapping_key/src/contract.cairo
index a7a58515..4639f58c 100644
--- a/listings/ch01-advanced-concepts/struct_as_mapping_key/src/contract.cairo
+++ b/listings/ch01-advanced-concepts/struct_as_mapping_key/src/contract.cairo
@@ -1,7 +1,5 @@
 #[starknet::contract]
 mod PetRegistry {
-    use starknet::get_caller_address;
-    use starknet::ContractAddress;
     use poseidon::poseidon_hash_span;
     use serde::Serde;
     use array::ArrayTrait;