diff --git a/lib/mv_web/helpers/membership_fee_helpers.ex b/lib/mv_web/helpers/membership_fee_helpers.ex
index 0d2c3d3..8b97c15 100644
--- a/lib/mv_web/helpers/membership_fee_helpers.ex
+++ b/lib/mv_web/helpers/membership_fee_helpers.ex
@@ -28,8 +28,11 @@ defmodule MvWeb.Helpers.MembershipFeeHelpers do
     # Use German format: comma as decimal separator, always 2 decimal places
     # Normalize to 2 decimal places
     normalized = Decimal.round(amount, 2)
-    normalized_str = Decimal.to_string(normalized, :normal)
-    normalized_str = String.replace(normalized_str, ".", ",")
+    normalized_str =
+      normalized
+      |> Decimal.to_string(:normal)
+      |> String.replace(".", ",")
+
     # Ensure 2 decimal places
     case String.split(normalized_str, ",") do
       [int_part, dec_part] when byte_size(dec_part) == 1 ->