diff --git a/src/lib/misc/confirmation-dialog/confirmation-dialog.component.ts b/src/lib/misc/confirmation-dialog/confirmation-dialog.component.ts
index 4225e44..efa6357 100644
--- a/src/lib/misc/confirmation-dialog/confirmation-dialog.component.ts
+++ b/src/lib/misc/confirmation-dialog/confirmation-dialog.component.ts
@@ -19,7 +19,7 @@ export enum ConfirmOptions {
 interface CheckBox {
     value: boolean;
     label: string;
-    extraContent: TemplateRef<unknown> | null;
+    extraContent?: TemplateRef<unknown>;
     extraContentData?: Record<string, unknown>;
 }