diff --git a/sigal/__init__.py b/sigal/__init__.py
index cd5b691..afe210e 100644
--- a/sigal/__init__.py
+++ b/sigal/__init__.py
@@ -39,6 +39,8 @@ from sigal.image import Gallery
 from sigal.settings import read_settings
 from sigal.theme import Theme
 
+_DEFAULT_CONFIG_FILE = 'sigal.conf'
+
 def main():
     "main program"
 
@@ -59,7 +61,7 @@ def main():
         sys.exit(1)
 
     print ":: Reading settings ..."
-    settings = read_settings(args.input_dir)
+    settings = read_settings(os.path.join(args.input_dir, _DEFAULT_CONFIG_FILE))
 
     if args.copyright:
         settings['copyright'] = args.copyright
diff --git a/sigal/settings.py b/sigal/settings.py
index de49a32..dc24742 100644
--- a/sigal/settings.py
+++ b/sigal/settings.py
@@ -20,20 +20,19 @@
 import os
 import ConfigParser
 
-CONFIG_FILE = 'sigal.conf'
-
 _DEFAULT_CONFIG = {
     'img_size': '640x480',
     'thumb_prefix': '',
     'thumb_size': '150x112',
-    'thumb_dir': "thumbnail",
+    'thumb_dir': 'thumbnail',
     'square_thumb': 0,
     'big_img': 0,
-    'bigimg_dir': "big",
+    'bigimg_dir': 'big',
     'jpg_quality': 90,
     'exif': 1,
     'copyright': '',
-    'fileExtList': ".jpg,.jpeg,.JPG,.JPEG,.png"
+    'fileExtList': '.jpg,.jpeg,.JPG,.JPEG,.png',
+    'theme': 'default'
     }
 
 
@@ -45,16 +44,15 @@ def get_size(string):
     return tuple(size)
 
 
-def read_settings(source_dir):
+def read_settings(filename=None):
     "Read settings from a config file in the source_dir root"
 
-    # Read configuration file
+    # Read the default configuration
     config = ConfigParser.ConfigParser(defaults=_DEFAULT_CONFIG)
 
-    # Load a config file in the source_dir root
-    local_config = os.path.join(source_dir, CONFIG_FILE)
-    if os.path.isfile(local_config):
-        config.read(local_config)
+    # Load the config file
+    if filename and os.path.isfile(filename):
+        config.read(filename)
 
     settings = dict(config.items('sigal'))
     settings['jpg_quality'] = int(settings['jpg_quality'])
diff --git a/tests/test_settings.py b/tests/test_settings.py
new file mode 100644
index 0000000..2a4d751
--- /dev/null
+++ b/tests/test_settings.py
@@ -0,0 +1,28 @@
+#! /usr/bin/env python2
+# -*- coding:utf-8 -*-
+
+import os
+import unittest
+
+from sigal.settings import read_settings
+
+class TestSettings(unittest.TestCase):
+    "Read a settings file and check that the configuration is well done."
+
+    def setUp(self):
+        "Read the sample config file"
+        self.path = os.path.abspath(os.path.dirname(__file__))
+        default_conf = os.path.join(self.path, 'sample', 'sigal.conf')
+        self.settings = read_settings(default_conf)
+
+    def test_img_size(self):
+        "Test that image sizes are correctly read"
+        self.assertTupleEqual(self.settings['img_size'], (640, 480))
+        self.assertTupleEqual(self.settings['thumb_size'], (150, 112))
+
+    def test_fileextlist(self):
+        self.assertListEqual(self.settings['fileextlist'],
+                             ['.jpg', '.jpeg', '.JPG', '.JPEG', '.png'])
+
+    def test_type_conversion(self):
+        self.assertEqual(self.settings['jpg_quality'], 90)