diff --git a/core-primitives/top-pool-author/src/author.rs b/core-primitives/top-pool-author/src/author.rs
index 0a5a12f004..7ec09f66cd 100644
--- a/core-primitives/top-pool-author/src/author.rs
+++ b/core-primitives/top-pool-author/src/author.rs
@@ -45,7 +45,7 @@ use jsonrpc_core::{
 };
 use log::*;
 use sp_runtime::generic;
-use std::{boxed::Box, sync::Arc, vec::Vec};
+use std::{boxed::Box, sync::Arc, vec, vec::Vec};
 
 /// Define type of TOP filter that is used in the Author
 #[cfg(feature = "sidechain")]
@@ -319,6 +319,10 @@ where
 		self.top_pool.shards()
 	}
 
+	fn list_handled_shards(&self) -> Vec<ShardIdentifier> {
+		self.state_facade.list_shards().unwrap_or(vec![])
+	}
+
 	fn remove_calls_from_pool(
 		&self,
 		shard: ShardIdentifier,
diff --git a/core-primitives/top-pool-author/src/mocks.rs b/core-primitives/top-pool-author/src/mocks.rs
index 154502245b..693c27f8a4 100644
--- a/core-primitives/top-pool-author/src/mocks.rs
+++ b/core-primitives/top-pool-author/src/mocks.rs
@@ -168,6 +168,11 @@ impl AuthorApi<H256, H256> for AuthorApiMock<H256, H256> {
 		self.tops.read().unwrap().keys().cloned().collect()
 	}
 
+	fn list_handled_shards(&self) -> Vec<ShardIdentifier> {
+		//dummy
+		self.tops.read().unwrap().keys().cloned().collect()
+	}
+
 	fn remove_calls_from_pool(
 		&self,
 		shard: ShardIdentifier,
diff --git a/core-primitives/top-pool-author/src/traits.rs b/core-primitives/top-pool-author/src/traits.rs
index 692431c910..b2e490423f 100644
--- a/core-primitives/top-pool-author/src/traits.rs
+++ b/core-primitives/top-pool-author/src/traits.rs
@@ -53,8 +53,12 @@ pub trait AuthorApi<Hash, BlockHash> {
 		account: &AccountId,
 	) -> Vec<TrustedOperation>;
 
+	/// returns all shards which are currently present in the tops in the pool
 	fn get_shards(&self) -> Vec<ShardIdentifier>;
 
+	/// returns all shards which are handled by our worker
+	fn list_handled_shards(&self) -> Vec<ShardIdentifier>;
+
 	/// Remove a collection of trusted operations from the pool.
 	/// Return operations that were not successfully removed.
 	fn remove_calls_from_pool(
diff --git a/core/parentchain/indirect-calls-executor/src/executor.rs b/core/parentchain/indirect-calls-executor/src/executor.rs
index 0d3b45d8c8..5dbfc3e7e9 100644
--- a/core/parentchain/indirect-calls-executor/src/executor.rs
+++ b/core/parentchain/indirect-calls-executor/src/executor.rs
@@ -191,16 +191,13 @@ impl<
 			meta_data.confirm_processed_parentchain_block_call_indexes()
 		})??;
 		let root: H256 = merkle_root::<Keccak256, _>(extrinsics);
-		let mrenclave = self.stf_enclave_signer.ocall_api.get_mr
-		let shard = self.top_pool_author.get_shards().get(0).unwrap_or(),
+		//todo: really use mrenclave here
+		let mrenclave = ShardIdentifier::default();
+		let handled_shards = self.top_pool_author.list_handled_shards();
+		trace!("got handled shards: {:?}", handled_shards);
+		let shard = handled_shards.get(0).unwrap_or(&mrenclave);
 		trace!("prepared confirm_processed_parentchain_block() call for block {:?} with index {:?} and merkle root {}", block_number, call, root);
-		Ok(OpaqueCall::from_tuple(&(
-			call,
-			shard,
-			block_hash,
-			block_number,
-			root,
-		)))
+		Ok(OpaqueCall::from_tuple(&(call, shard, block_hash, block_number, root)))
 	}
 }
 
diff --git a/service/src/setup.rs b/service/src/setup.rs
index e5f38b7a0b..6535091f26 100644
--- a/service/src/setup.rs
+++ b/service/src/setup.rs
@@ -17,6 +17,7 @@
 */
 
 use crate::error::{Error, ServiceResult};
+use base58::ToBase58;
 use codec::Encode;
 use itp_enclave_api::{enclave_base::EnclaveBase, Enclave};
 use itp_settings::files::{
@@ -54,10 +55,10 @@ pub(crate) fn initialize_shard_and_keys(
 pub(crate) fn init_shard(enclave: &Enclave, shard_identifier: &ShardIdentifier) {
 	match enclave.init_shard(shard_identifier.encode()) {
 		Err(e) => {
-			println!("Failed to initialize shard {:?}: {:?}", shard_identifier.to_base58(), e);
+			println!("Failed to initialize shard {:?}: {:?}", shard_identifier.0.to_base58(), e);
 		},
 		Ok(_) => {
-			println!("Successfully initialized shard {:?}", shard_identifier.to_base58());
+			println!("Successfully initialized shard {:?}", shard_identifier.0.to_base58());
 		},
 	}
 }