diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d801ee54a..e5f96f4efe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 
 ### Fixes
+- [#3347](https://github.com/poanetwork/blockscout/pull/3347) - Contract interaction: fix encoding of bytes output
 - [#3346](https://github.com/poanetwork/blockscout/pull/3346) - Fix inventory tab pagination
 - [#3344](https://github.com/poanetwork/blockscout/pull/3344) - Fix logs search on address page
 - [#3342](https://github.com/poanetwork/blockscout/pull/3342) - Fix mobile styles for contract code tab
diff --git a/apps/explorer/lib/explorer/smart_contract/reader.ex b/apps/explorer/lib/explorer/smart_contract/reader.ex
index 8d82b58f30..266c6c1828 100644
--- a/apps/explorer/lib/explorer/smart_contract/reader.ex
+++ b/apps/explorer/lib/explorer/smart_contract/reader.ex
@@ -449,6 +449,10 @@ defmodule Explorer.SmartContract.Reader do
     Map.put_new(output, "value", bytes_to_string(Enum.at(values, index)))
   end
 
+  defp new_value(%{"type" => :bytes} = output, values, index) do
+    Map.put_new(output, "value", bytes_to_string(Enum.at(values, index)))
+  end
+
   defp new_value(output, [value], _index) do
     Map.put_new(output, "value", value)
   end