diff --git a/packages/overlayscrollbars-ngx/src/overlayscrollbars.component.ts b/packages/overlayscrollbars-ngx/src/overlayscrollbars.component.ts
index 77c0ff36..df9f5405 100644
--- a/packages/overlayscrollbars-ngx/src/overlayscrollbars.component.ts
+++ b/packages/overlayscrollbars-ngx/src/overlayscrollbars.component.ts
@@ -97,7 +97,7 @@ export class OverlayScrollbarsComponent implements OnDestroy, AfterViewInit {
   }
 
   ngOnDestroy() {
-    this.osDirective?.osInstance()!.destroy();
+    this.osDirective?.osInstance()?.destroy();
   }
 
   mergeEvents(originalEvents: OverlayScrollbarsComponent['events']) {