diff --git a/graphql/core/utils/type_comparators.py b/graphql/core/utils/type_comparators.py
index 2899b43a..0fa358b4 100644
--- a/graphql/core/utils/type_comparators.py
+++ b/graphql/core/utils/type_comparators.py
@@ -1,5 +1,5 @@
-from ..type.definition import (GraphQLList, GraphQLNonNull, GraphQLObjectType,
-                               GraphQLInterfaceType, GraphQLUnionType,
+from ..type.definition import (GraphQLInterfaceType, GraphQLList, GraphQLNonNull,
+                               GraphQLObjectType, GraphQLUnionType,
                                is_abstract_type)
 
 
diff --git a/graphql/core/validation/rules/possible_fragment_spreads.py b/graphql/core/validation/rules/possible_fragment_spreads.py
index d01cb354..d7709995 100644
--- a/graphql/core/validation/rules/possible_fragment_spreads.py
+++ b/graphql/core/validation/rules/possible_fragment_spreads.py
@@ -1,6 +1,6 @@
 from ...error import GraphQLError
-from ...utils.type_from_ast import type_from_ast
 from ...utils.type_comparators import do_types_overlap
+from ...utils.type_from_ast import type_from_ast
 from .base import ValidationRule