diff --git a/main.js b/main.js
index 69dc3bd..4fdbf35 100644
--- a/main.js
+++ b/main.js
@@ -127,6 +127,7 @@ class OrgTodoListView extends ItemView {
         cb.addEventListener("change", () => {
             this.showDone = cb.checked;
             this.renderList();
+            this.renderTagBar();
         });
 
         this.tagBarEl = root.createDiv({ cls: "org-todo-tagbar" });
@@ -224,7 +225,10 @@ class OrgTodoListView extends ItemView {
 
         // Every tag in the vault — the chip bar is a stable, complete palette.
         const all = new Set();
-        for (const t of this.tasks) t.tags.forEach((x) => all.add(x));
+        for (const t of this.tasks) {
+            if (!this.showDone && t.done) continue;
+            t.tags.forEach((x) => all.add(x));
+        }
 
         // Prune active filters whose tag no longer exists (the ghost-filter fix).
         for (const tag of [...this.activeTags]) {