From 67012a23d1544ca9ae0df1ff407eadc32726b197 Mon Sep 17 00:00:00 2001
From: Jacek Sieka <jacek@status.im>
Date: Mon, 24 May 2021 23:25:18 +0200
Subject: [PATCH] return List, not list

---
 specs/altair/fork.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/specs/altair/fork.md b/specs/altair/fork.md
index bf5d87714..e3c219e61 100644
--- a/specs/altair/fork.md
+++ b/specs/altair/fork.md
@@ -65,7 +65,7 @@ def load_historical_batches(pre: BeaconState) -> List[HistoricalBatchSummary, HI
     # altair-compatible clients leading up to the fork. All in all, this should
     # be around 10kb of hashes.
 
-    return []
+    return List[HistoricalBatchSummary, HISTORICAL_ROOTS_LIMIT]()
 
 def upgrade_to_altair(pre: phase0.BeaconState) -> BeaconState:
     epoch = phase0.get_current_epoch(pre)