diff --git a/lib/archethic/utils/regression/playbook.ex b/lib/archethic/utils/regression/playbook.ex
index f642006dd1..e20fc78467 100644
--- a/lib/archethic/utils/regression/playbook.ex
+++ b/lib/archethic/utils/regression/playbook.ex
@@ -176,11 +176,11 @@ defmodule Archethic.Utils.Regression.Playbook do
            &WebClient.json(&1, "/api/transaction_fee", tx_to_json(tx)),
            proto
          ) do
-      {:ok, _transaction_fee} = transaction_fee->
+      {:ok, _transaction_fee} = transaction_fee ->
         transaction_fee
 
-      _ ->
-        :error
+      error ->
+        error
     end
   end