diff --git a/apps/playground/src/app/store.ts b/apps/playground/src/app/store.ts
index 6c0a1d9..d4fe91d 100644
--- a/apps/playground/src/app/store.ts
+++ b/apps/playground/src/app/store.ts
@@ -1,6 +1,13 @@
 import { BehaviorSubject } from 'rxjs';
 
-export const store = new BehaviorSubject({
+interface Data {
+  settingOne: string;
+  settingTwo: string;
+  settingThree: boolean;
+  ignore: string;
+}
+
+export const store = new BehaviorSubject<Data>({
   settingOne: 'Initial Value',
   settingTwo: 'jack',
   settingThree: true,
diff --git a/libs/dirty-check-forms/src/lib/dirty-check.ts b/libs/dirty-check-forms/src/lib/dirty-check.ts
index abd5ff1..45bb176 100644
--- a/libs/dirty-check-forms/src/lib/dirty-check.ts
+++ b/libs/dirty-check-forms/src/lib/dirty-check.ts
@@ -36,7 +36,7 @@ function getControlValue(control: AbstractControl, withDisabled: boolean) {
 
 export function dirtyCheck<
   U,
-  Config extends U extends Record<string, unknown>
+  Config extends U extends object
     ? DirtyCheckConfig<U>
     : Omit<DirtyCheckConfig<U>, 'excludeKeys'>
 >(