diff --git a/tracing/shared/primitives/rpc/debug/src/lib.rs b/tracing/shared/primitives/rpc/debug/src/lib.rs
index c057034..8930214 100644
--- a/tracing/shared/primitives/rpc/debug/src/lib.rs
+++ b/tracing/shared/primitives/rpc/debug/src/lib.rs
@@ -35,13 +35,13 @@ sp_api::decl_runtime_apis! {
 		fn trace_transaction(
 			extrinsics: Vec<Block::Extrinsic>,
 			transaction: &Transaction,
-			transaction: &Block::Header,
+			header: &Block::Header,
 		) -> Result<(), sp_runtime::DispatchError>;
 
 		fn trace_block(
 			extrinsics: Vec<Block::Extrinsic>,
 			known_transactions: Vec<H256>,
-			transaction: &Block::Header,
+			header: &Block::Header,
 		) -> Result<(), sp_runtime::DispatchError>;
 	}
 }