diff --git a/common/rpc-service.c b/common/rpc-service.c
index 3eac091..fdc57ba 100644
--- a/common/rpc-service.c
+++ b/common/rpc-service.c
@@ -2463,28 +2463,17 @@ seafile_unshare_subdir_for_user (const char *repo_id,
     }
 
     char *real_path;
-    char *vrepo_id;
     int ret = 0;
 
     real_path = format_dir_path (path);
 
-    vrepo_id = seaf_repo_manager_get_virtual_repo_id (seaf->repo_mgr, repo_id,
-                                                      real_path, owner);
-    if (!vrepo_id) {
-        g_set_error (error, SEAFILE_DOMAIN, SEAF_ERR_GENERAL,
-                     "Failed to get shared sub repo");
-        ret = -1;
-        goto out;
-    }
-
-    ret = seaf_share_manager_remove_share (seaf->share_mgr, vrepo_id, owner, share_user);
+    ret = seaf_share_manager_unshare_subdir (seaf->share_mgr,
+                                             repo_id, real_path, owner, share_user);
     if (ret < 0) {
         g_set_error (error, SEAFILE_DOMAIN, SEAF_ERR_GENERAL,
                      "Failed to unshare subdir for user");
     }
-    g_free (vrepo_id);
 
-out:
     g_free (real_path);
     return ret;
 }
@@ -2752,29 +2741,17 @@ seafile_unshare_subdir_for_group (const char *repo_id,
     }
 
     char *real_path;
-    char *vrepo_id;
     int ret = 0;
 
     real_path = format_dir_path (path);
 
-    vrepo_id = seaf_repo_manager_get_virtual_repo_id (seaf->repo_mgr, repo_id,
-                                                      real_path, owner);
-    if (!vrepo_id) {
-        g_set_error (error, SEAFILE_DOMAIN, SEAF_ERR_GENERAL,
-                     "Failed to get shared sub repo");
-        ret = -1;
-        goto out;
-    }
-
-    ret = seaf_repo_manager_del_group_repo (seaf->repo_mgr, vrepo_id,
-                                            share_group, error);
+    ret = seaf_share_manager_unshare_group_subdir (seaf->share_mgr, repo_id,
+                                                   real_path, owner, share_group);
     if (ret < 0) {
         g_set_error (error, SEAFILE_DOMAIN, SEAF_ERR_GENERAL,
                      "Failed to unshare subdir for group");
     }
-    g_free (vrepo_id);
 
-out:
     g_free (real_path);
     return ret;
 }
diff --git a/server/share-mgr.c b/server/share-mgr.c
index 7cd077e..9b086ff 100644
--- a/server/share-mgr.c
+++ b/server/share-mgr.c
@@ -500,6 +500,28 @@ seaf_share_manager_remove_share (SeafShareManager *mgr, const char *repo_id,
     return 0;
 }
 
+int
+seaf_share_manager_unshare_subdir (SeafShareManager* mgr,
+                                   const char *orig_repo_id,
+                                   const char *path,
+                                   const char *from_email,
+                                   const char *to_email)
+{
+    if (seaf_db_statement_query (mgr->seaf->db,
+                                 "DELETE FROM SharedRepo WHERE "
+                                 "from_email = ? AND to_email = ? "
+                                 "AND repo_id IN "
+                                 "(SELECT repo_id FROM VirtualRepo WHERE "
+                                 "origin_repo = ? AND path = ?)",
+                                 4, "string", from_email,
+                                 "string", to_email,
+                                 "string", orig_repo_id,
+                                 "string", path) < 0)
+        return -1;
+
+    return 0;
+}
+
 int
 seaf_share_manager_remove_repo (SeafShareManager *mgr, const char *repo_id)
 {
@@ -681,3 +703,25 @@ seaf_get_shared_repo_by_path (SeafRepoManager *mgr,
 
     return ret;
 }
+
+int
+seaf_share_manager_unshare_group_subdir (SeafShareManager* mgr,
+                                         const char *repo_id,
+                                         const char *path,
+                                         const char *owner,
+                                         int group_id)
+{
+    if (seaf_db_statement_query (mgr->seaf->db,
+                                 "DELETE FROM RepoGroup WHERE "
+                                 "user_name = ? AND group_id = ? "
+                                 "AND repo_id IN "
+                                 "(SELECT repo_id FROM VirtualRepo WHERE "
+                                 "origin_repo = ? AND path = ?)",
+                                 4, "string", owner,
+                                 "int", group_id,
+                                 "string", repo_id,
+                                 "string", path) < 0)
+        return -1;
+
+    return 0;
+}
diff --git a/server/share-mgr.h b/server/share-mgr.h
index 00235ef..b92e2ef 100644
--- a/server/share-mgr.h
+++ b/server/share-mgr.h
@@ -57,6 +57,14 @@ int
 seaf_share_manager_remove_share (SeafShareManager *mgr, const char *repo_id,
                                  const char *from_email, const char *to_email);
 
+int
+seaf_share_manager_unshare_subdir (SeafShareManager* mgr,
+                                   const char *orig_repo_id,
+                                   const char *path,
+                                   const char *from_email,
+                                   const char *to_email);
+
+
 /* Remove all share info of a repo. */
 int
 seaf_share_manager_remove_repo (SeafShareManager *mgr, const char *repo_id);
@@ -82,6 +90,12 @@ seaf_get_shared_repo_by_path (SeafRepoManager *mgr,
                               const char *shared_to,
                               int is_org,
                               GError **error);
+int
+seaf_share_manager_unshare_group_subdir (SeafShareManager* mgr,
+                                         const char *repo_id,
+                                         const char *path,
+                                         const char *owner,
+                                         int group_id);
 
 #endif /* SHARE_MGR_H */