diff --git a/pkg/sentry/fs/g3doc/fuse.md b/pkg/sentry/fs/g3doc/fuse.md
index b43c082a7e..2ca84dd746 100644
--- a/pkg/sentry/fs/g3doc/fuse.md
+++ b/pkg/sentry/fs/g3doc/fuse.md
@@ -76,7 +76,8 @@ ops can be implemented in parallel.
 
 #### Minimal client that can mount a trivial FUSE filesystem.
 
--   Implement `/dev/fuse`.
+-   Implement `/dev/fuse` - a character device used to establish an FD for
+    communication between the sentry and the server daemon.
 
 -   Implement basic FUSE ops like `FUSE_INIT`, `FUSE_DESTROY`.