diff --git a/app/auth/views/fido.py b/app/auth/views/fido.py
index b2387a59..710f6eac 100644
--- a/app/auth/views/fido.py
+++ b/app/auth/views/fido.py
@@ -1,8 +1,7 @@
 import json
 import secrets
 import webauthn
-from app.config import URL as SITE_URL
-from urllib.parse import urlparse
+from app.config import RP_ID
 
 from flask import request, render_template, redirect, url_for, flash, session
 from flask_login import login_user
@@ -40,8 +39,6 @@ def fido():
 
     next_url = request.args.get("next")
 
-    RP_ID = urlparse(SITE_URL).hostname
-
     webauthn_user = webauthn.WebAuthnUser(
             user.fido_uuid, user.email, user.name, False,
             user.fido_credential_id, user.fido_pk, user.fido_sign_count, RP_ID)
diff --git a/app/config.py b/app/config.py
index 1ffc40ea..77efb9c2 100644
--- a/app/config.py
+++ b/app/config.py
@@ -4,6 +4,7 @@ import string
 import subprocess
 
 from dotenv import load_dotenv
+from urllib.parse import urlparse
 
 SHA1 = subprocess.getoutput("git rev-parse HEAD")
 ROOT_DIR = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
@@ -38,6 +39,9 @@ DEBUG = os.environ["DEBUG"] if "DEBUG" in os.environ else False
 URL = os.environ["URL"]
 print(">>> URL:", URL)
 
+# Calculate RP_ID for WebAuthn
+RP_ID = urlparse(URL).hostname
+
 SENTRY_DSN = os.environ.get("SENTRY_DSN")
 
 # can use another sentry project for the front-end to avoid noises
diff --git a/app/dashboard/views/fido_setup.py b/app/dashboard/views/fido_setup.py
index 4609abb9..8deb0f96 100644
--- a/app/dashboard/views/fido_setup.py
+++ b/app/dashboard/views/fido_setup.py
@@ -2,7 +2,7 @@ import uuid
 import json
 import secrets
 import webauthn
-from app.config import URL as SITE_URL
+from app.config import RP_ID
 from urllib.parse import urlparse
 
 from flask import render_template, flash, redirect, url_for, session
@@ -28,8 +28,6 @@ def fido_setup():
 
     fido_token_form = FidoTokenForm()
 
-    RP_ID = urlparse(SITE_URL).hostname
-
     # Handling POST requests
     if fido_token_form.validate_on_submit():
         try: