diff --git a/pre_commit/languages/swift.py b/pre_commit/languages/swift.py
index ef3ffb35..b0e034ca 100644
--- a/pre_commit/languages/swift.py
+++ b/pre_commit/languages/swift.py
@@ -5,13 +5,13 @@ import os
 from pre_commit.languages import helpers
 from pre_commit.util import clean_path_on_failure
 from pre_commit.util import cwd
-from pre_commit.languages import helpers
 from pre_commit.xargs import xargs
 
 ENVIRONMENT_DIR = 'swift_env'
 BUILD_DIR = '.build'
 BUILD_CONFIG = 'release'
 
+
 def install_environment(
         repo_cmd_runner,
         version='default',
@@ -31,6 +31,7 @@ def install_environment(
             '--build-path', os.path.join(directory, BUILD_DIR),
         ))
 
+
 def run_hook(repo_cmd_runner, hook, file_args):
     directory = repo_cmd_runner.path(helpers.environment_dir(
         ENVIRONMENT_DIR, 'default',