diff --git a/app/auth/views/logout.py b/app/auth/views/logout.py
index cad96694..98b63b38 100644
--- a/app/auth/views/logout.py
+++ b/app/auth/views/logout.py
@@ -2,6 +2,7 @@ from flask import redirect, url_for, flash, make_response
 from flask_login import logout_user
 
 from app.auth.base import auth_bp
+from app.config import SESSION_COOKIE_NAME
 
 
 @auth_bp.route("/logout")
@@ -9,7 +10,7 @@ def logout():
     logout_user()
     flash("You are logged out", "success")
     response = make_response(redirect(url_for("auth.login")))
-    response.delete_cookie("slapp")
+    response.delete_cookie(SESSION_COOKIE_NAME)
     response.delete_cookie("mfa")
     response.delete_cookie("dark-mode")
 
diff --git a/app/config.py b/app/config.py
index 7177dbce..2ceac359 100644
--- a/app/config.py
+++ b/app/config.py
@@ -144,6 +144,7 @@ DB_URI = os.environ["DB_URI"]
 
 # Flask secret
 FLASK_SECRET = os.environ["FLASK_SECRET"]
+SESSION_COOKIE_NAME = "slapp"
 MAILBOX_SECRET = FLASK_SECRET + "mailbox"
 CUSTOM_ALIAS_SECRET = FLASK_SECRET + "custom_alias"
 
diff --git a/server.py b/server.py
index ba05acd5..3aea0b72 100644
--- a/server.py
+++ b/server.py
@@ -39,6 +39,7 @@ from app.config import (
     FLASK_PROFILER_PASSWORD,
     SENTRY_FRONT_END_DSN,
     FIRST_ALIAS_DOMAIN,
+    SESSION_COOKIE_NAME,
 )
 from app.dashboard.base import dashboard_bp
 from app.developer.base import developer_bp
@@ -100,7 +101,7 @@ def create_app() -> Flask:
     app.config["TEMPLATES_AUTO_RELOAD"] = True
 
     # to avoid conflict with other cookie
-    app.config["SESSION_COOKIE_NAME"] = "slapp"
+    app.config["SESSION_COOKIE_NAME"] = SESSION_COOKIE_NAME
     if URL.startswith("https"):
         app.config["SESSION_COOKIE_SECURE"] = True
     app.config["SESSION_COOKIE_SAMESITE"] = "Lax"