diff --git a/apps/accounts/serializers/account/account.py b/apps/accounts/serializers/account/account.py
index 5b7bbdbce..295c8ed1f 100644
--- a/apps/accounts/serializers/account/account.py
+++ b/apps/accounts/serializers/account/account.py
@@ -81,7 +81,7 @@ class AccountAssetSerializer(serializers.ModelSerializer):
 
     def to_internal_value(self, data):
         if isinstance(data, dict):
-            i = data.get('id')
+            i = data.get('id') or data.get('pk')
         else:
             i = data
 
diff --git a/apps/accounts/serializers/account/base.py b/apps/accounts/serializers/account/base.py
index f31f19196..88239c98e 100644
--- a/apps/accounts/serializers/account/base.py
+++ b/apps/accounts/serializers/account/base.py
@@ -16,7 +16,7 @@ class AuthValidateMixin(serializers.Serializer):
         choices=SecretType.choices, required=True, label=_('Secret type')
     )
     secret = EncryptedField(
-        label=_('Secret/Password'), required=False, max_length=40960, allow_blank=True,
+        label=_('Secret'), required=False, max_length=40960, allow_blank=True,
         allow_null=True, write_only=True,
     )
     passphrase = serializers.CharField(
diff --git a/apps/common/drf/parsers/base.py b/apps/common/drf/parsers/base.py
index 7f3d4b055..94b9df159 100644
--- a/apps/common/drf/parsers/base.py
+++ b/apps/common/drf/parsers/base.py
@@ -111,7 +111,7 @@ class BaseFileParser(BaseParser):
         return {'pk': obj_id, 'name': obj_name}
 
     def parse_value(self, field, value):
-        if value is '-':
+        if value is '-' and field and field.allow_null:
             return None
         elif hasattr(field, 'to_file_internal_value'):
             value = field.to_file_internal_value(value)
diff --git a/apps/locale/ja/LC_MESSAGES/django.po b/apps/locale/ja/LC_MESSAGES/django.po
index d4b4ecc20..8db56f83f 100644
--- a/apps/locale/ja/LC_MESSAGES/django.po
+++ b/apps/locale/ja/LC_MESSAGES/django.po
@@ -584,7 +584,7 @@ msgid "Asset type"
 msgstr "資産タイプ"
 
 #: accounts/serializers/account/base.py:19
-msgid "Secret/Password"
+msgid "Secret"
 msgstr "キー/パスワード"
 
 #: accounts/serializers/account/base.py:24
diff --git a/apps/locale/zh/LC_MESSAGES/django.po b/apps/locale/zh/LC_MESSAGES/django.po
index ba0a34c84..268aa8bdb 100644
--- a/apps/locale/zh/LC_MESSAGES/django.po
+++ b/apps/locale/zh/LC_MESSAGES/django.po
@@ -580,8 +580,8 @@ msgid "Asset type"
 msgstr "资产类型"
 
 #: accounts/serializers/account/base.py:19
-msgid "Secret/Password"
-msgstr "密钥/密码"
+msgid "Secret"
+msgstr "密文"
 
 #: accounts/serializers/account/base.py:24
 msgid "Key password"