diff --git a/rosdoc2/verbs/build/builders/sphinx_builder.py b/rosdoc2/verbs/build/builders/sphinx_builder.py
index e1acb9d..3aa3346 100644
--- a/rosdoc2/verbs/build/builders/sphinx_builder.py
+++ b/rosdoc2/verbs/build/builders/sphinx_builder.py
@@ -277,6 +277,9 @@ def ensure_global(name, default):
     ## If an empty dictionary is provided, breathe defaults will be used.
     # 'exhale_specs_mapping': {{}},
 
+    ## This setting, if True, will ensure autodoc is part of the 'extensions'.
+    # 'enable_autodoc': True,
+
     ## This setting, if True, will ensure intersphinx is part of the 'extensions'.
     # 'enable_intersphinx': True,