diff --git a/kernel/model/file.go b/kernel/model/file.go
index eb18bf34c..efcaebf70 100644
--- a/kernel/model/file.go
+++ b/kernel/model/file.go
@@ -992,11 +992,6 @@ func MoveDoc(fromBoxID, fromPath, toBoxID, toPath string) (newPath string, err e
 		return
 	}
 
-	if depth := strings.Count(toPath, "/"); 6 < depth && !Conf.FileTree.AllowCreateDeeper {
-		err = errors.New(Conf.Language(118))
-		return
-	}
-
 	fromDir := strings.TrimSuffix(fromPath, ".sy")
 	if strings.HasPrefix(toPath, fromDir) {
 		err = errors.New(Conf.Language(87))
@@ -1016,6 +1011,12 @@ func MoveDoc(fromBoxID, fromPath, toBoxID, toPath string) (newPath string, err e
 		return
 	}
 
+	childDepth := util.GetChildDocDepth(filepath.Join(util.DataDir, fromBoxID, fromPath))
+	if depth := strings.Count(toPath, "/") + childDepth; 6 < depth && !Conf.FileTree.AllowCreateDeeper {
+		err = errors.New(Conf.Language(118))
+		return
+	}
+
 	toBox := Conf.Box(toBoxID)
 	if nil == toBox {
 		err = errors.New(Conf.Language(0))
diff --git a/kernel/util/path.go b/kernel/util/path.go
index f630f7a81..26be07a28 100644
--- a/kernel/util/path.go
+++ b/kernel/util/path.go
@@ -21,6 +21,7 @@ import (
 	"net"
 	"os"
 	"path"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -138,3 +139,23 @@ func TimeFromID(id string) (ret string) {
 	ret = id[:14]
 	return
 }
+
+func GetChildDocDepth(treeAbsPath string) (ret int) {
+	dir := strings.TrimSuffix(treeAbsPath, ".sy")
+	if !gulu.File.IsDir(dir) {
+		return
+	}
+
+	baseDepth := strings.Count(filepath.ToSlash(treeAbsPath), "/")
+	depth := 1
+	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		p := filepath.ToSlash(path)
+		currentDepth := strings.Count(p, "/")
+		if depth < currentDepth {
+			depth = currentDepth
+		}
+		return nil
+	})
+	ret = depth - baseDepth
+	return
+}