diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd9c8aba33..0fc0bbf57e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 - [#4067](https://github.com/blockscout/blockscout/pull/4067) - Display LP tokens USD value and custom metadata in tokens dropdown at address page
 
 ### Fixes
+- [#4345](https://github.com/blockscout/blockscout/pull/4345) - Fix bug on validator's address transactions page
 - [#4342](https://github.com/blockscout/blockscout/pull/4342) - Remove dropped/replaced txs from address transactions page
 - [#4320](https://github.com/blockscout/blockscout/pull/4320) - Fix absence of imported smart-contracts' source code in `getsourcecode` api method 
 - [#4274](https://github.com/blockscout/blockscout/pull/4302) - Fix search token-autocomplete
diff --git a/apps/explorer/lib/explorer/chain.ex b/apps/explorer/lib/explorer/chain.ex
index 24f21ee7a9..2524770de4 100644
--- a/apps/explorer/lib/explorer/chain.ex
+++ b/apps/explorer/lib/explorer/chain.ex
@@ -375,7 +375,11 @@ defmodule Explorer.Chain do
           {-emission_reward.block.number, 1}
 
         item ->
-          {-item.block_number, -item.index}
+          if item.block_number do
+            {-item.block_number, -item.index}
+          else
+            {0, -item.index}
+          end
       end
     end)
     |> Enum.dedup_by(fn item ->