diff --git a/pre_commit/run.py b/pre_commit/run.py
index 1fd9d5c0..0eda1584 100644
--- a/pre_commit/run.py
+++ b/pre_commit/run.py
@@ -1,6 +1,5 @@
 
 import argparse
-import os.path
 import subprocess
 import sys
 
@@ -36,7 +35,7 @@ def _run_single_hook(runner, repository, hook_id, all_files=False):
     retcode, stdout, stderr = repository.run_hook(
         runner.cmd_runner,
         hook_id,
-        map(os.path.abspath, get_filenames(hook['files'])),
+        get_filenames(hook['files']),
     )
 
     if retcode != repository.hooks[hook_id].get('expected_return_value', 0):