diff --git a/patacrep/content/song.py b/patacrep/content/song.py
index 9a1b4635..b44fc7f1 100755
--- a/patacrep/content/song.py
+++ b/patacrep/content/song.py
@@ -41,10 +41,10 @@ class SongRenderer(Content):
 
                 {song}
                 """).format(
-            separator="%"*80,
-            path=self.song.subpath,
-            song=self.song.render(output=context['filename'], output_format="latex"),
-            )
+                    separator="%"*80,
+                    path=self.song.subpath,
+                    song=self.song.render(output=context['filename'], output_format="latex"),
+                )
 
 #pylint: disable=unused-argument
 def parse(keyword, argument, contentlist, config):
diff --git a/patacrep/songs/chordpro/test/test_parser.py b/patacrep/songs/chordpro/test/test_parser.py
index 32216d47..26e5181a 100644
--- a/patacrep/songs/chordpro/test/test_parser.py
+++ b/patacrep/songs/chordpro/test/test_parser.py
@@ -21,6 +21,12 @@ class TestParsingRendering(unittest.TestCase):
     maxDiff = None
 
     def test_all(self):
+        """Test all `*.source` files.
+
+        For any given `foo.source`, it is parsed as a chordpro file, and
+        should be rendered as `foo.sgc` with the chordpro renderer, and
+        `foo.tex` with the latex renderer.
+        """
         config = DEFAULT_CONFIG.copy()
         config.update({
             'encoding': 'utf8',