diff --git a/scone/default/utensils/docker_utensils.py b/scone/default/utensils/docker_utensils.py
index 6d6970c..d0b275d 100644
--- a/scone/default/utensils/docker_utensils.py
+++ b/scone/default/utensils/docker_utensils.py
@@ -76,7 +76,9 @@ class DockerContainerRun(Utensil):
     ports: Dict[str, Tuple[str, int]]
     # Volumes to mount inside the container.
     # Key is either a host path or a container name.
-    # Value is a dictionary with the keys.
+    # Value is a dictionary with the keys of:
+    #   bind = path to bind inside the container
+    #   mode = 'rw' or 'ro'
     volumes: Dict[str, Dict[str, str]]
 
     @attr.s(auto_attribs=True)