diff --git a/graphene-sqlalchemy/graphene_sqlalchemy/types.py b/graphene-sqlalchemy/graphene_sqlalchemy/types.py
index e0bd9292..c4e4c8cd 100644
--- a/graphene-sqlalchemy/graphene_sqlalchemy/types.py
+++ b/graphene-sqlalchemy/graphene_sqlalchemy/types.py
@@ -3,7 +3,7 @@ import six
 from sqlalchemy.inspection import inspect as sqlalchemyinspect
 from sqlalchemy.orm.exc import NoResultFound
 
-from graphene import ObjectType
+from graphene import ObjectType, Field
 from graphene.relay import is_node
 from .converter import (convert_sqlalchemy_column,
                         convert_sqlalchemy_relationship)
@@ -13,7 +13,7 @@ from graphene.types.objecttype import ObjectTypeMeta
 from graphene.types.options import Options
 from .registry import Registry, get_global_registry
 from graphene.utils.is_base_type import is_base_type
-from graphene.types.utils import get_fields_in_type, merge
+from graphene.types.utils import yank_fields_from_attrs, merge
 from .utils import get_query
 
 
@@ -89,9 +89,9 @@ class SQLAlchemyObjectTypeMeta(ObjectTypeMeta):
 
         options.registry.register(cls)
 
-        options.sqlalchemy_fields = get_fields_in_type(
-            ObjectType,
-            construct_fields(options)
+        options.sqlalchemy_fields = yank_fields_from_attrs(
+            construct_fields(options),
+            _as=Field,
         )
         options.fields = merge(
             options.interface_fields,
diff --git a/graphene/types/utils.py b/graphene/types/utils.py
index 7f7a19f5..c171e9e0 100644
--- a/graphene/types/utils.py
+++ b/graphene/types/utils.py
@@ -65,7 +65,7 @@ def get_field_as(value, _as=None):
         return mount_as(value, _as)
 
 
-def yank_fields_from_attrs(attrs, _as=None):
+def yank_fields_from_attrs(attrs, _as=None, delete=True, sort=True):
     '''
     Extract all the fields in given attributes (dict)
     and return them ordered
@@ -76,6 +76,9 @@ def yank_fields_from_attrs(attrs, _as=None):
         if not field:
             continue
         fields_with_names.append((attname, field))
-        del attrs[attname]
+        if delete:
+            del attrs[attname]
 
-    return OrderedDict(sorted(fields_with_names, key=lambda f: f[1]))
+    if sort:
+        fields_with_names = sorted(fields_with_names, key=lambda f: f[1])
+    return OrderedDict(fields_with_names)