diff --git a/src/lib/help-mode/help-button/help-button.component.ts b/src/lib/help-mode/help-button/help-button.component.ts
index b086ab7..e7a949f 100644
--- a/src/lib/help-mode/help-button/help-button.component.ts
+++ b/src/lib/help-mode/help-button/help-button.component.ts
@@ -62,7 +62,7 @@ export class HelpButtonComponent implements OnInit, AfterViewInit, OnDestroy {
     onResize() {
         const currentComponent = this._elementRef.nativeElement;
         const currentComponentRect = currentComponent.getBoundingClientRect();
-        this.helpModeButton.style.setProperty('top', `${currentComponentRect.top}px`);
-        this.helpModeButton.style.setProperty('left', `${currentComponentRect.left}px`);
+        this.helpModeButton?.style.setProperty('top', `${currentComponentRect.top}px`);
+        this.helpModeButton?.style.setProperty('left', `${currentComponentRect.left}px`);
     }
 }