diff --git a/tests/sample/sigal.conf.py b/tests/sample/sigal.conf.py
index 34e5d24..4db648a 100644
--- a/tests/sample/sigal.conf.py
+++ b/tests/sample/sigal.conf.py
@@ -12,7 +12,7 @@ files_to_copy = (('../watermark.png', 'watermark.png'),)
 plugins = [
     'sigal.plugins.adjust',
     'sigal.plugins.copyright',
-    'sigal.plugins.extended_caching'
+    'sigal.plugins.extended_caching',
     'sigal.plugins.feeds',
     'sigal.plugins.nomedia',
     'sigal.plugins.watermark',