diff --git a/kernel/model/box.go b/kernel/model/box.go
index 37a543411..b6a746560 100644
--- a/kernel/model/box.go
+++ b/kernel/model/box.go
@@ -350,7 +350,8 @@ func (box *Box) Unindex() {
 	sql.RemoveBoxHash(tx, box.ID)
 	sql.DeleteByBoxTx(tx, box.ID)
 	sql.CommitTx(tx)
-	treenode.RemoveBlockTreesByBoxID(box.ID)
+	ids := treenode.RemoveBlockTreesByBoxID(box.ID)
+	RemoveRecentDoc(ids)
 }
 
 func (box *Box) ListFiles(path string) (ret []*FileInfo) {
diff --git a/kernel/treenode/blocktree.go b/kernel/treenode/blocktree.go
index d0a9d1f89..4b56896f3 100644
--- a/kernel/treenode/blocktree.go
+++ b/kernel/treenode/blocktree.go
@@ -175,11 +175,10 @@ func RemoveBlockTreesByPathPrefix(pathPrefix string) {
 	blockTreesChanged = true
 }
 
-func RemoveBlockTreesByBoxID(boxID string) {
+func RemoveBlockTreesByBoxID(boxID string) (ids []string) {
 	blockTreesLock.Lock()
 	defer blockTreesLock.Unlock()
 
-	var ids []string
 	for _, b := range blockTrees {
 		if b.BoxID == boxID {
 			ids = append(ids, b.ID)
@@ -189,6 +188,7 @@ func RemoveBlockTreesByBoxID(boxID string) {
 		delete(blockTrees, id)
 	}
 	blockTreesChanged = true
+	return
 }
 
 func RemoveBlockTree(id string) {