diff --git a/lib/credo/check/params.ex b/lib/credo/check/params.ex
index 08ca4fa4f..9ae06b687 100644
--- a/lib/credo/check/params.ex
+++ b/lib/credo/check/params.ex
@@ -71,7 +71,7 @@ defmodule Credo.Check.Params do
 
   @doc false
   def category(params, check_mod) do
-    params[:__category__] || params[:category] || check_mod.category()
+    params[:__category__] || params[:category] || check_mod.category
   end
 
   @doc false
diff --git a/lib/credo/cli/output.ex b/lib/credo/cli/output.ex
index cf7fad119..c40974a67 100644
--- a/lib/credo/cli/output.ex
+++ b/lib/credo/cli/output.ex
@@ -33,7 +33,7 @@ defmodule Credo.CLI.Output do
   end
 
   def check_tag(check_mod, in_parens) do
-    check_mod.category()
+    check_mod.category
     |> to_string
     |> check_tag(in_parens)
   end