diff --git a/config/runtime.exs b/config/runtime.exs
index aa43ee6..ca345f4 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -15,17 +15,18 @@ end
 config :cannery, CanneryWeb.ViewHelpers, shibao_mode: System.get_env("SHIBAO_MODE") == "true"
 
 # Set default locale
-config :gettext, :default_locale, System.get_env("LOCALE") || "en_US"
+config :gettext, :default_locale, System.get_env("LOCALE", "en_US")
 
 maybe_ipv6 = if System.get_env("ECTO_IPV6") == "true", do: [:inet6], else: []
 
 database_url =
   if config_env() == :test do
-    System.get_env("TEST_DATABASE_URL") ||
+    System.get_env(
+      "TEST_DATABASE_URL",
       "ecto://postgres:postgres@localhost/cannery_test#{System.get_env("MIX_TEST_PARTITION")}"
+    )
   else
-    System.get_env("DATABASE_URL") ||
-      "ecto://postgres:postgres@cannery-db/cannery"
+    System.get_env("DATABASE_URL", "ecto://postgres:postgres@cannery-db/cannery")
   end
 
 host =
@@ -40,7 +41,7 @@ interface =
 config :cannery, Cannery.Repo,
   # ssl: true,
   url: database_url,
-  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
+  pool_size: String.to_integer(System.get_env("POOL_SIZE", "10")),
   socket_options: maybe_ipv6
 
 config :cannery, CanneryWeb.Endpoint,
@@ -49,10 +50,10 @@ config :cannery, CanneryWeb.Endpoint,
     # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html
     # for details about using IPv6 vs IPv4 and loopback vs public addresses.
     ip: interface,
-    port: String.to_integer(System.get_env("PORT") || "4000")
+    port: String.to_integer(System.get_env("PORT", "4000"))
   ],
   server: true,
-  registration: System.get_env("REGISTRATION") || "invite"
+  registration: System.get_env("REGISTRATION", "invite")
 
 if config_env() == :prod do
   # The secret key base is used to sign/encrypt cookies and other secrets.
@@ -76,12 +77,12 @@ if config_env() == :prod do
   config :cannery, Cannery.Mailer,
     adapter: Swoosh.Adapters.SMTP,
     relay: System.get_env("SMTP_HOST") || raise("No SMTP_HOST set!"),
-    port: System.get_env("SMTP_PORT") || 587,
+    port: System.get_env("SMTP_PORT", 587),
     username: System.get_env("SMTP_USERNAME") || raise("No SMTP_USERNAME set!"),
     password: System.get_env("SMTP_PASSWORD") || raise("No SMTP_PASSWORD set!"),
     ssl: System.get_env("SMTP_SSL") == "true",
-    email_from: System.get_env("EMAIL_FROM") || "no-reply@#{System.get_env("HOST")}",
-    email_name: System.get_env("EMAIL_NAME") || "Cannery"
+    email_from: System.get_env("EMAIL_FROM", "no-reply@#{System.get_env("HOST")}"),
+    email_name: System.get_env("EMAIL_NAME", "Cannery")
 
   # ## Using releases
   #
diff --git a/lib/cannery_web/router.ex b/lib/cannery_web/router.ex
index 2c1c9e5..f4af43a 100644
--- a/lib/cannery_web/router.ex
+++ b/lib/cannery_web/router.ex
@@ -11,15 +11,17 @@ defmodule CanneryWeb.Router do
     plug :protect_from_forgery
     plug :put_secure_browser_headers
     plug :fetch_current_user
-    plug :put_user_locale, default: Application.compile_env(:gettext, :default_locale, "en_US")
+    plug :put_user_locale
   end
 
-  defp put_user_locale(%{assigns: %{current_user: %{locale: locale}}} = conn, default: default) do
+  defp put_user_locale(%{assigns: %{current_user: %{locale: locale}}} = conn, _opts) do
+    default = Application.fetch_env!(:gettext, :default_locale)
     Gettext.put_locale(locale || default)
     conn |> put_session(:locale, locale || default)
   end
 
-  defp put_user_locale(conn, default: default) do
+  defp put_user_locale(conn, _opts) do
+    default = Application.fetch_env!(:gettext, :default_locale)
     Gettext.put_locale(default)
     conn |> put_session(:locale, default)
   end