diff --git a/tvix/store/src/bin/tvix-store.rs b/tvix/store/src/bin/tvix-store.rs
index c11af5765..3e1c0ef9a 100644
--- a/tvix/store/src/bin/tvix-store.rs
+++ b/tvix/store/src/bin/tvix-store.rs
@@ -92,6 +92,8 @@ enum Commands {
         path_info_service_addr: String,
 
         /// Whether to list elements at the root of the mount point.
+        /// This is useful if your PathInfoService doesn't provide an
+        /// (exhaustive) listing.
         #[clap(long, short, action)]
         list_root: bool,
     },