diff --git a/src/modules/auth/auth.controller.ts b/src/modules/auth/auth.controller.ts
index 624f395..cdfb4fa 100644
--- a/src/modules/auth/auth.controller.ts
+++ b/src/modules/auth/auth.controller.ts
@@ -40,7 +40,7 @@ export class AuthController {
       return res.redirect(next ?? '/');
     }
     req.session['next'] = next ?? '/';
-    const request_url = req.get('host') ?? 'localhost:8000';
+    const request_url = req.get('host') ?? 'otl.kaist.ac.kr';
     console.log(request_url);
     const { url, state } = this.ssoClient.get_login_params(request_url);
     req.session['sso_state'] = state;
diff --git a/src/modules/auth/command/jwt.command.ts b/src/modules/auth/command/jwt.command.ts
index 505df3b..3e8bd31 100644
--- a/src/modules/auth/command/jwt.command.ts
+++ b/src/modules/auth/command/jwt.command.ts
@@ -75,7 +75,7 @@ export class JwtCommand implements AuthCommand {
           }
           return prevResult;
         } catch (e) {
-          console.error(e);
+          // console.error(e);
           return prevResult;
         }
       }
diff --git a/src/modules/auth/utils/sparcs-sso.ts b/src/modules/auth/utils/sparcs-sso.ts
index 2ebe365..ce2019e 100644
--- a/src/modules/auth/utils/sparcs-sso.ts
+++ b/src/modules/auth/utils/sparcs-sso.ts
@@ -142,7 +142,7 @@ export class Client {
     };
     const preferred_url =
       allowedPreferredUris[request_url] ||
-      'http:localhost:8000/session/login/callback/';
+      'https://otl.sparcs.org/session/login/callback/';
     const params: Params = {
       client_id: this.client_id,
       state: state,