diff --git a/substrate/client/transaction-pool/src/api.rs b/substrate/client/transaction-pool/src/api.rs
index 0d9ec122b8..a735c67d84 100644
--- a/substrate/client/transaction-pool/src/api.rs
+++ b/substrate/client/transaction-pool/src/api.rs
@@ -341,7 +341,7 @@ where
 			block,
 			header,
 			method: "TaggedTransactionQueue_validate_transaction".into(),
-			call_data: (source, uxt).encode(),
+			call_data: (source, uxt, block).encode(),
 			retry_count: None,
 		});
 		let remote_validation_request = remote_validation_request.then(move |result| {