diff --git a/config/runtime.exs b/config/runtime.exs
index 955297b..57630b0 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -80,19 +80,11 @@ if config_env() == :prod do
       origins -> String.split(origins, ",", trim: true)
     end
 
-  force_ssl =
-    case System.get_env("PHX_FORCE_SSL") do
-      "false" -> false
-      "reverse_proxy" -> [hsts: true, rewrite_on: [:x_forwarded_proto]]
-      _ -> [hsts: true]
-    end
-
   config :atjams, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")
 
   config :atjams, AtjamsWeb.Endpoint,
     url: [host: host, port: 443, scheme: "https"],
     check_origin: check_origin,
-    force_ssl: force_ssl,
     http: [
       # Enable IPv6 and bind on all interfaces.
       # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
diff --git a/lib/atjams/application.ex b/lib/atjams/application.ex
index 839d110..5012852 100644
--- a/lib/atjams/application.ex
+++ b/lib/atjams/application.ex
@@ -28,7 +28,7 @@ defmodule Atjams.Application do
         restart: :permanent,
         shutdown: 500
       },
-      AtjamsWeb.Endpoint
+      {AtjamsWeb.Endpoint, force_ssl: AtjamsWeb.Endpoint.force_ssl_config()}
     ]
 
     # See https://hexdocs.pm/elixir/Supervisor.html
diff --git a/lib/atjams_web/endpoint.ex b/lib/atjams_web/endpoint.ex
index 5983f36..c2df2c3 100644
--- a/lib/atjams_web/endpoint.ex
+++ b/lib/atjams_web/endpoint.ex
@@ -55,4 +55,12 @@ defmodule AtjamsWeb.Endpoint do
   plug Plug.Head
   plug Plug.Session, @session_options
   plug AtjamsWeb.Router
+
+  def force_ssl_config do
+    case System.get_env("PHX_FORCE_SSL") do
+      "false" -> false
+      "reverse_proxy" -> [hsts: true, rewrite_on: [:x_forwarded_proto]]
+      _ -> [hsts: true]
+    end
+  end
 end