diff --git a/lib/irmin.ml b/lib/irmin.ml
index 1bfbbdd851..395b80cc24 100644
--- a/lib/irmin.ml
+++ b/lib/irmin.ml
@@ -171,8 +171,6 @@ let remote_store (type t) (module M: S with type t = t) (t:t) =
 
 let remote_uri = Ir_sync_ext.remote_uri
 
-module type BASIC = S with type branch_id = string and type commit_id = Hash.SHA1.t
-
 module type T = S with type branch_id = string and type commit_id = Hash.SHA1.t
 
 let with_hrw_view (type store) (type path) (type view)
diff --git a/lib/irmin.mli b/lib/irmin.mli
index 17bd130f92..5be95c2eec 100644
--- a/lib/irmin.mli
+++ b/lib/irmin.mli
@@ -1798,29 +1798,6 @@ module type S_MAKER =
        and type branch_id = R.t
        and type commit_id = H.t
 
-(** {1:basics Basic API} *)
-
-(** The basic API considers default Irmin implementations using:
-
-    {ul
-    {- {{!Path.String_list}list of strings} as keys.}
-    {- {{!Ref.String}strings} as branch IDs.}
-    {- {{!Hash.SHA1}SHA1} as internal digests.}
-    }
-
-    Only the {{!Contents.S}contents} is provided by the user.
-*)
-
-
-module type BASIC = S with type branch_id = string and type commit_id = Hash.SHA1.t
-(** The signature of basic stores.
- 
-    Branch names (refs) are strings and the hash is SHA1.
-    To generate a basic store from a backend, use e.g.
-
-    [module Store = Irmin_git.FS(Irmin.Contents.String)(Irmin.Ref.String)(Irmin.Hash.SHA1)]
-*)
-
 (** {2 Synchronization} *)
 
 type remote