diff --git a/examples/README b/examples/README
index 54348764..9250ab3a 100644
--- a/examples/README
+++ b/examples/README
@@ -1,3 +1,3 @@
 Run the following command to build an example song book.
 
-$ songbook example.sb
+$ songbook example.yaml
diff --git a/patacrep/build.py b/patacrep/build.py
index 83e7efdb..c3ac9461 100644
--- a/patacrep/build.py
+++ b/patacrep/build.py
@@ -170,7 +170,7 @@ class SongbookBuilder:
     def __init__(self, raw_songbook):
         # Basename of the songbook to be built.
         self.basename = raw_songbook['_basename']
-        # Representation of the .sb songbook configuration file.
+        # Representation of the .yaml songbook configuration file.
         self.songbook = Songbook(raw_songbook, self.basename)
 
     def _run_once(self, function, *args, **kwargs):