From b38a0d0ab82c3028a51f184713d5a077f7b577f1 Mon Sep 17 00:00:00 2001
From: Svyatoslav Nikolsky <svyatonik@gmail.com>
Date: Wed, 8 Mar 2023 15:12:14 +0300
Subject: [PATCH] optimize justifications before they're included into complex
 transaction (#1949)

---
 bridges/relays/lib-substrate-relay/src/on_demand/headers.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bridges/relays/lib-substrate-relay/src/on_demand/headers.rs b/bridges/relays/lib-substrate-relay/src/on_demand/headers.rs
index 090019f087f6c..aded79a857af2 100644
--- a/bridges/relays/lib-substrate-relay/src/on_demand/headers.rs
+++ b/bridges/relays/lib-substrate-relay/src/on_demand/headers.rs
@@ -138,6 +138,9 @@ impl<P: SubstrateFinalitySyncPipeline> OnDemandRelay<P::SourceChain, P::TargetCh
 		let (header, proof) = finality_source.prove_block_finality(required_header).await?;
 		let header_id = header.id();
 
+		// optimize justification before including it into the call
+		let proof = P::FinalityEngine::optimize_proof(&self.target_client, &header, proof).await?;
+
 		log::debug!(
 			target: "bridge",
 			"[{}] Requested to prove {} head {:?}. Selected to prove {} head {:?}",