diff --git a/src/app/components/add-task/add-task.component.ts b/src/app/components/add-task/add-task.component.ts
index fc55245..8c9a805 100644
--- a/src/app/components/add-task/add-task.component.ts
+++ b/src/app/components/add-task/add-task.component.ts
@@ -47,6 +47,7 @@ export class AddTaskComponent {
 
   addSubtask(subtaskName: string) {
     this.taskData.subtasksTitle.unshift(subtaskName);
+    this.taskData.subtasksDone.push(false);
     this.saveTaskData();
   }
 
@@ -55,6 +56,7 @@ export class AddTaskComponent {
       this.taskData.subtasksTitle.indexOf(subtaskName),
       1
     );
+    this.taskData.subtasksDone.splice(1);
     this.saveTaskData();
   }
 
diff --git a/src/app/interfaces/task-data.interface.ts b/src/app/interfaces/task-data.interface.ts
deleted file mode 100644
index 82489f3..0000000
--- a/src/app/interfaces/task-data.interface.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-export interface TaskData {
-  title: string;
-  description: string;
-  date: string;
-  priority: string;
-  category: string;
-  assigned: string[];
-  subtasksTitle: string[];
-}
diff --git a/src/app/services/firebase.service.ts b/src/app/services/firebase.service.ts
index a263499..dba5f26 100644
--- a/src/app/services/firebase.service.ts
+++ b/src/app/services/firebase.service.ts
@@ -10,7 +10,7 @@ import {
 } from '@angular/fire/firestore';
 import { Task } from '../interfaces/task.interface';
 import { User } from '../interfaces/user.interface';
-import { TaskData } from '../interfaces/task-data.interface';
+
 @Injectable({
   providedIn: 'root',
 })
@@ -58,7 +58,7 @@ export class FirebaseService implements OnDestroy {
     });
   }
 
-  async addNewTask(task: TaskData) {
+  async addNewTask(task: Task) {
     await addDoc(collection(this.firestore, 'tasks'), task)
       .catch((err) => {
         console.error(err);