diff --git a/seahub/avatar/templatetags/avatar_tags.py b/seahub/avatar/templatetags/avatar_tags.py
index afdc27a803..4a6423d4de 100644
--- a/seahub/avatar/templatetags/avatar_tags.py
+++ b/seahub/avatar/templatetags/avatar_tags.py
@@ -54,7 +54,7 @@ def avatar(user, size=AVATAR_DEFAULT_SIZE):
     if not isinstance(user, User):
         try:
             user = User.objects.get(email=user)
-            url = avatar_url(user, size)
+            url = avatar_url(user, size*2)
         except User.DoesNotExist:
             url = get_default_avatar_non_registered_url()
         except Exception as e:
@@ -63,7 +63,7 @@ def avatar(user, size=AVATAR_DEFAULT_SIZE):
             url = get_default_avatar_non_registered_url()
     else:
         try:
-            url = avatar_url(user, size)
+            url = avatar_url(user, size*2)
         except Exception as e:
             # Catch exceptions to avoid 500 errors.
             logger.error(e)
diff --git a/seahub/settings.py b/seahub/settings.py
index 4b2278b3f5..7d7f2b5947 100644
--- a/seahub/settings.py
+++ b/seahub/settings.py
@@ -338,7 +338,7 @@ AVATAR_DEFAULT_URL = '/avatars/default.png'
 AVATAR_DEFAULT_NON_REGISTERED_URL = '/avatars/default-non-register.jpg'
 AVATAR_MAX_AVATARS_PER_USER = 1
 AVATAR_CACHE_TIMEOUT = 14 * 24 * 60 * 60
-AUTO_GENERATE_AVATAR_SIZES = (16, 20, 24, 28, 32, 36, 40, 42, 48, 60, 64, 80, 84)
+AUTO_GENERATE_AVATAR_SIZES = (16, 20, 24, 28, 32, 36, 40, 42, 48, 60, 64, 72, 80, 84, 160)
 # Group avatar
 GROUP_AVATAR_STORAGE_DIR = 'avatars/groups'
 GROUP_AVATAR_DEFAULT_URL = 'avatars/groups/default.png'
diff --git a/static/scripts/app/views/dir.js b/static/scripts/app/views/dir.js
index 8120d7965e..c8b30d78ce 100644
--- a/static/scripts/app/views/dir.js
+++ b/static/scripts/app/views/dir.js
@@ -1000,6 +1000,7 @@ define([
                                     _this.$('th .checkbox').removeClass('checkbox-checked');
                                     _this.$('#multi-dirents-op').hide();
                                     _this.$('#cur-dir-ops').show();
+                                    _this.updateDirOpBarUI();
                                 } else {
                                     $(selected_dirents).each(function() {
                                         if (data['deleted'].indexOf(this.get('obj_name')) != -1) {
@@ -1144,6 +1145,7 @@ define([
                                             _this.$('th .checkbox').removeClass('checkbox-checked');
                                             _this.$('#multi-dirents-op').hide();
                                             _this.$('#cur-dir-ops').show();
+                                            _this.updateDirOpBarUI();
                                         } else {
                                             $(dirs).each(function() {
                                                 if (this.get('obj_name') in data['success']) {