diff --git a/src/Application.php b/src/Application.php
index 6d5efaea..f36342e2 100644
--- a/src/Application.php
+++ b/src/Application.php
@@ -66,11 +66,6 @@ public function run(\Minz\Request $request): mixed
         /** @var ?string */
         $session_token = $request->cookie('session_token');
 
-        if (!$session_token) {
-            /** @var ?string */
-            $session_token = $request->cookie('flusio_session_token');
-        }
-
         if (
             !$session_token &&
             auth\CurrentUser::sessionToken() &&
@@ -117,7 +112,6 @@ public function run(\Minz\Request $request): mixed
 
                 $response = \Minz\Response::redirect('login');
                 $response->removeCookie('session_token');
-                $response->removeCookie('flusio_session_token');
                 return $response;
             }
 
diff --git a/src/controllers/Sessions.php b/src/controllers/Sessions.php
index bd0a2f9b..4abb4b8b 100644
--- a/src/controllers/Sessions.php
+++ b/src/controllers/Sessions.php
@@ -216,7 +216,6 @@ public function delete(Request $request): Response
 
         $response = Response::redirect('home');
         $response->removeCookie('session_token');
-        $response->removeCookie('flusio_session_token');
         return $response;
     }
 }