diff --git a/server.py b/server.py
index 5078f137..87d35e09 100644
--- a/server.py
+++ b/server.py
@@ -55,6 +55,9 @@ def create_app() -> Flask:
 
     app.config["TEMPLATES_AUTO_RELOAD"] = True
 
+    # to avoid conflict with other cookie
+    app.config["SESSION_COOKIE_NAME"] = "slapp"
+
     init_extensions(app)
     register_blueprints(app)
     set_index_page(app)