diff --git a/generators/app/templates/src/app/shell/__material-simple.shell.component.ts b/generators/app/templates/src/app/shell/__material-simple.shell.component.ts
index aeee5ff4..b3acfbb0 100644
--- a/generators/app/templates/src/app/shell/__material-simple.shell.component.ts
+++ b/generators/app/templates/src/app/shell/__material-simple.shell.component.ts
@@ -25,7 +25,7 @@ export class ShellComponent implements OnInit {
         filter(({ matches }) => !matches),
         untilDestroyed(this)
       )
-      .subscribe(() => this.sidenav.close());
+      .subscribe(() => this.sidenav?.close());
   }
 
 }