diff --git a/lib/atex/config/oauth.ex b/lib/atex/config/oauth.ex
index 024b7f1..1aed81a 100644
--- a/lib/atex/config/oauth.ex
+++ b/lib/atex/config/oauth.ex
@@ -42,8 +42,8 @@ defmodule Atex.Config.OAuth do
   @doc """
   Returns whether OAuth should be put into the localhost loopback mode.
   """
-  @spec is_localhost() :: boolean()
-  def is_localhost() do
+  @spec localhost?() :: boolean()
+  def localhost?() do
     Keyword.get(Application.get_env(:atex, Atex.OAuth, []), :is_localhost, false)
   end
 
@@ -56,7 +56,7 @@ defmodule Atex.Config.OAuth do
   """
   @spec client_id() :: String.t()
   def client_id() do
-    if is_localhost() do
+    if localhost?() do
       query =
         %{redirect_uri: redirect_uri(), scope: scopes()}
         |> URI.encode_query()
diff --git a/lib/atex/oauth/flow.ex b/lib/atex/oauth/flow.ex
index b83376b..1218bff 100644
--- a/lib/atex/oauth/flow.ex
+++ b/lib/atex/oauth/flow.ex
@@ -230,7 +230,7 @@ defmodule Atex.OAuth.Flow do
     }
 
     body =
-      if Config.is_localhost(),
+      if Config.localhost?(),
         do: body,
         else:
           Map.merge(body, %{