diff --git a/app/src/main/java/be/ugent/sel/studeez/data/local/models/task/Task.kt b/app/src/main/java/be/ugent/sel/studeez/data/local/models/task/Task.kt
index 05a5020..f2618db 100644
--- a/app/src/main/java/be/ugent/sel/studeez/data/local/models/task/Task.kt
+++ b/app/src/main/java/be/ugent/sel/studeez/data/local/models/task/Task.kt
@@ -9,3 +9,11 @@ data class Task(
     val time: Int = 0,
     val subjectId: String = "",
 )
+
+object TaskDocument {
+    const val id = "id"
+    const val name = "name"
+    const val completed = "completed"
+    const val time = "time"
+    const val subjectId = "subjectId"
+}
diff --git a/app/src/main/java/be/ugent/sel/studeez/domain/implementation/FireBaseTaskDAO.kt b/app/src/main/java/be/ugent/sel/studeez/domain/implementation/FireBaseTaskDAO.kt
index 45d32f8..b8855e6 100644
--- a/app/src/main/java/be/ugent/sel/studeez/domain/implementation/FireBaseTaskDAO.kt
+++ b/app/src/main/java/be/ugent/sel/studeez/domain/implementation/FireBaseTaskDAO.kt
@@ -2,6 +2,7 @@ package be.ugent.sel.studeez.domain.implementation
 
 import be.ugent.sel.studeez.data.local.models.task.Subject
 import be.ugent.sel.studeez.data.local.models.task.Task
+import be.ugent.sel.studeez.data.local.models.task.TaskDocument
 import be.ugent.sel.studeez.domain.AccountDAO
 import be.ugent.sel.studeez.domain.TaskDAO
 import com.google.firebase.firestore.CollectionReference
@@ -36,7 +37,7 @@ class FireBaseTaskDAO @Inject constructor(
     override fun toggleTaskCompleted(task: Task, completed: Boolean) {
         selectedSubjectTasksCollection(task.subjectId)
             .document(task.id)
-            .update("completed", completed)
+            .update(TaskDocument.completed, completed)
     }
 
     private fun selectedSubjectTasksCollection(subjectId: String): CollectionReference =