diff --git a/frontend/src/app/guards/auth.guard.ts b/frontend/src/app/guards/auth.guard.ts
index 993acbf..60ac5fa 100644
--- a/frontend/src/app/guards/auth.guard.ts
+++ b/frontend/src/app/guards/auth.guard.ts
@@ -23,7 +23,9 @@ export class AuthGuard implements CanActivate {
   ): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
     if (!this.authService.checkAuthStatus()) {
       this.router.createUrlTree(['/']);
-      const dialogRef = this.dialog.open(LoginDialogComponent);
+      const dialogRef = this.dialog.open(LoginDialogComponent, {
+        width: '400px',
+      })
       return dialogRef.afterClosed().pipe(
         map(result => {
           if (result) {