diff --git a/lib/planner/tasks.ex b/lib/planner/tasks.ex
index 5501510..23919e8 100644
--- a/lib/planner/tasks.ex
+++ b/lib/planner/tasks.ex
@@ -10,6 +10,18 @@ defmodule Planner.Tasks do
 
   def list_all_tasks, do: Repo.all(Task)
 
+  def list_unfiled_tasks do
+    filed_ids = from(pd in PlanDetail, select: pd.task_id)
+
+    from(
+      t in Task,
+      where: is_nil(t.finished_at) and t.id not in subquery(filed_ids),
+      order_by: [desc: t.updated_at]
+    )
+    |> Repo.all()
+    |> Repo.preload(:plans)
+  end
+
   def list_unfinished_tasks do
     from(
       t in Task,
diff --git a/lib/planner/tasks/task.ex b/lib/planner/tasks/task.ex
index 7b73d4b..ffb3f23 100644
--- a/lib/planner/tasks/task.ex
+++ b/lib/planner/tasks/task.ex
@@ -6,7 +6,6 @@ defmodule Planner.Tasks.Task do
   @foreign_key_type :binary_id
   schema "tasks" do
     field(:value, :string)
-    field(:filed_at, :naive_datetime)
     field(:finished_at, :naive_datetime)
     field(:due_at, :naive_datetime)
 
@@ -17,7 +16,7 @@ defmodule Planner.Tasks.Task do
 
   def changeset(task, attrs) do
     task
-    |> cast(attrs, [:value, :filed_at, :finished_at, :due_at])
+    |> cast(attrs, [:value, :finished_at, :due_at])
     |> validate_required([:value])
     |> validate_length(:value, min: 3)
   end
diff --git a/lib/planner_web/live/tasks_components.ex b/lib/planner_web/live/tasks_components.ex
index a706932..08556ab 100644
--- a/lib/planner_web/live/tasks_components.ex
+++ b/lib/planner_web/live/tasks_components.ex
@@ -134,13 +134,13 @@ defmodule TaskDetailsComponent do
         to: @route_index_tasks.(@socket),
         class: "delete is-pulled-right"
       ) %>
-      <%= if(not is_nil(@task.due_at) or is_nil(@task.filed_at)) do %>
+      <%= if(not is_nil(@task.due_at) or length(@task.plans) == 0) do %>
         <div class="tags">
           <%= if(not is_nil(@task.due_at)) do %>
             <span class="tag is-warning">
               due: <%= @task.due_at %>
             </span><% end %>
-          <%= if(is_nil(@task.filed_at)) do %>
+          <%= if(length(@task.plans) == 0) do %>
             <span class="tag is-danger">
               unfiled
             </span>
diff --git a/lib/planner_web/live/tasks_live.ex b/lib/planner_web/live/tasks_live.ex
index e949c39..db0da07 100644
--- a/lib/planner_web/live/tasks_live.ex
+++ b/lib/planner_web/live/tasks_live.ex
@@ -38,7 +38,7 @@ defmodule PlannerWeb.TasksLive do
           socket
           |> assign(:active_task, task_id)
           |> assign(:active_plan, nil)
-          |> assign(:tasks, Tasks.list_unfinished_tasks())
+          |> assign(:tasks, Tasks.list_unfiled_tasks())
           |> add_task_routes()
 
         {:noreply, assign(socket, :active_task, task_id)}
@@ -72,7 +72,7 @@ defmodule PlannerWeb.TasksLive do
       socket
       |> assign(:active_task, nil)
       |> assign(:active_plan, nil)
-      |> assign(:tasks, Tasks.list_unfinished_tasks())
+      |> assign(:tasks, Tasks.list_unfiled_tasks())
       |> add_task_routes()
 
     {:noreply, socket}
@@ -94,7 +94,7 @@ defmodule PlannerWeb.TasksLive do
                 <%= error_tag(f, :name) %>
               </div>
             </form>
-            <%= live_patch("all unfinished tasks", to: Routes.tasks_path(@socket, :index), class: "panel-block") %>
+            <%= live_patch("unfiled", to: Routes.tasks_path(@socket, :index), class: "panel-block") %>
             <%= for plan <- @plans do %>
               <%= live_patch(
                 plan.name,
@@ -109,7 +109,7 @@ defmodule PlannerWeb.TasksLive do
       <div class="column">
         <%= case @active_plan do %>
           <%= nil -> %>
-            <h4 class="title is-4">all unfinished tasks</h4>
+            <h4 class="title is-4">unfiled</h4>
          <% _ -> %>
             <h4 class="title is-4">
               <button
@@ -220,7 +220,7 @@ defmodule PlannerWeb.TasksLive do
   defp refresh_tasks_and_flash_msg(socket, msg) do
     tasks =
       case socket.assigns.active_plan do
-        nil -> Tasks.list_unfinished_tasks()
+        nil -> Tasks.list_unfiled_tasks()
         plan -> Tasks.list_unfinished_tasks_by_plan_id(plan.id)
       end
 
diff --git a/priv/repo/migrations/20201122000949_remove_field_filed_at_from_tasks.exs b/priv/repo/migrations/20201122000949_remove_field_filed_at_from_tasks.exs
new file mode 100644
index 0000000..4a9a0ba
--- /dev/null
+++ b/priv/repo/migrations/20201122000949_remove_field_filed_at_from_tasks.exs
@@ -0,0 +1,9 @@
+defmodule Planner.Repo.Migrations.RemoveFieldFiledAtFromTasks do
+  use Ecto.Migration
+
+  def change do
+    alter table(:tasks) do
+      remove(:filed_at)
+    end
+  end
+end