diff --git a/substrate/node/src/service.rs b/substrate/node/src/service.rs
index a5dbb58c..fe8671fc 100644
--- a/substrate/node/src/service.rs
+++ b/substrate/node/src/service.rs
@@ -2,7 +2,6 @@ use std::sync::Arc;
 
 use sc_service::{error::Error as ServiceError, Configuration, TaskManager};
 use sc_executor::NativeElseWasmExecutor;
-use sc_client_api::Backend;
 use sc_telemetry::{Telemetry, TelemetryWorker};
 
 use serai_runtime::{self, opaque::Block, RuntimeApi};
@@ -88,7 +87,7 @@ pub fn new_full(config: Configuration) -> Result<TaskManager, ServiceError> {
     mut task_manager,
     import_queue,
     keystore_container,
-    select_chain,
+    select_chain: _,
     other: mut telemetry,
     transaction_pool,
   } = new_partial(&config)?;
diff --git a/substrate/runtime/src/lib.rs b/substrate/runtime/src/lib.rs
index 3a411192..09d7b90e 100644
--- a/substrate/runtime/src/lib.rs
+++ b/substrate/runtime/src/lib.rs
@@ -35,9 +35,6 @@ use pallet_transaction_payment::CurrencyAdapter;
 /// An index to a block.
 pub type BlockNumber = u32;
 
-/// Signature type
-pub type Signature = sp_core::sr25519::Signature;
-
 /// Account ID type, equivalent to a public key
 pub type AccountId = sp_core::sr25519::Public;