diff --git a/compressor/tests/test_base.py b/compressor/tests/test_base.py
index 7a76f58..b276d79 100644
--- a/compressor/tests/test_base.py
+++ b/compressor/tests/test_base.py
@@ -19,6 +19,15 @@ def css_tag(href, **kwargs):
     return template % (href, rendered_attrs)
 
 
+class TestPrecompiler(object):
+    """A filter whose output is always the string 'OUTPUT' """
+    def __init__(self, content, filter_type=None, filename=None):
+        pass
+
+    def input(self, **kwargs):
+        return 'OUTPUT'
+
+
 test_dir = os.path.abspath(os.path.join(os.path.dirname(__file__)))
 
 
@@ -134,6 +143,18 @@ class CompressorTestCase(TestCase):
         finally:
             settings.COMPRESS_OUTPUT_DIR = old_output_dir
 
+    def test_precompiler_class_used(self):
+        original_precompilers = settings.COMPRESS_PRECOMPILERS
+        settings.COMPRESS_ENABLED = True
+        settings.COMPRESS_PRECOMPILERS = (
+             ('text/foobar', 'compressor.tests.base.TestPrecompiler'),
+        )
+        css = '<style type="text/foobar">p { border:10px solid red;}</style>'
+        css_node = CssCompressor(css)
+        output = BeautifulSoup(css_node.output('inline'))
+        self.assertEqual(output.text, 'OUTPUT')
+        settings.COMPRESS_PRECOMPILERS = original_precompilers
+
 
 class CssMediaTestCase(TestCase):
     def setUp(self):