diff --git a/modules/default.nix b/modules/default.nix
index 1aedf25..3b1eb55 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -31,14 +31,14 @@ in
         type = lib.types.str;
         default = "objectstore+file://%S/tvix-castore/blobs.object-store";
         description = ''
-          `blob-service-addr` option for the castore (please read tvix source/docs to learn more).
+          `blob-service-addr` option for the mutualized content addressed storage.
         '';
       };
       directory-service-addr = lib.mkOption {
         type = lib.types.str;
         default = "sled://%S/tvix-castore/directories.sled";
         description = ''
-          `directory-service-addr` option for the castore (please read tvix source/docs to learn more).
+          `directory-service-addr` option for the mutualized content addressed storage.
         '';
       };
       caches = lib.mkOption {