diff --git a/compressor/utils.py b/compressor/utils.py
index bd294d0..eec02cb 100644
--- a/compressor/utils.py
+++ b/compressor/utils.py
@@ -24,6 +24,11 @@ def get_mtime(filename):
         return mtime
     return os.path.getmtime(filename)
 
+def get_hashed_mtime(filename, length=12):
+    filename = os.path.realpath(filename)
+    mtime = str(int(get_mtime(filename)))
+    return get_hexdigest(mtime)[:length]
+
 
 def get_class(class_string, exception=FilterError):
     """
diff --git a/tests/core/tests.py b/tests/core/tests.py
index ad8f16a..c1504df 100644
--- a/tests/core/tests.py
+++ b/tests/core/tests.py
@@ -12,7 +12,7 @@ from django.core.cache.backends import dummy
 from compressor import CssCompressor, JsCompressor, storage
 from compressor.conf import settings
 from compressor.storage import CompressorFileStorage
-from compressor.utils import get_hexdigest, get_mtime
+from compressor.utils import get_hashed_mtime
 
 
 class CompressorTestCase(TestCase):
@@ -111,6 +111,7 @@ class CompressorTestCase(TestCase):
         self.assertEqual(output, JsCompressor(self.js).output())
         settings.OUTPUT_DIR = old_output_dir
 
+
 class LxmlCompressorTestCase(CompressorTestCase):
 
     def test_css_split(self):
@@ -131,10 +132,6 @@ class LxmlCompressorTestCase(CompressorTestCase):
     def tearDown(self):
         settings.PARSER = self.old_parser
 
-def get_hashed_mtime(filename, length=12):
-    filename = os.path.realpath(filename)
-    mtime = str(int(get_mtime(filename)))
-    return get_hexdigest(mtime)[:length]
 
 class CssAbsolutizingTestCase(TestCase):
     def setUp(self):
@@ -181,7 +178,6 @@ class CssAbsolutizingTestCase(TestCase):
         output = "p { background: url('%simages/image.gif?%s') }" % (settings.MEDIA_URL, get_hashed_mtime(filename))
         self.assertEqual(output, filter.input(filename=filename))
 
-
     def test_css_hunks(self):
         hash_dict = {
             'hash1': get_hashed_mtime(os.path.join(settings.MEDIA_ROOT, 'css/url/url1.css')),
@@ -326,6 +322,7 @@ class TemplatetagTestCase(TestCase):
         {% endcompress %}"""
         self.assertRaises(TemplateSyntaxError, render, template, {})
 
+
 class TestStorage(CompressorFileStorage):
     """
     Test compressor storage that gzips storage files
@@ -339,6 +336,7 @@ class TestStorage(CompressorFileStorage):
         out.writelines(open(self.path(filename), 'rb'))
         out.close()
 
+
 class StorageTestCase(TestCase):
     def setUp(self):
         self._storage = storage.default_storage