diff --git a/src/lib/merkle_ledger/dune b/src/lib/merkle_ledger/dune
index 59ca1a7be2f1..ee3fe493fb93 100644
--- a/src/lib/merkle_ledger/dune
+++ b/src/lib/merkle_ledger/dune
@@ -14,7 +14,6 @@
   (:standard -w +a-40..42-44 -warn-error +a-70 -open Core))
  (library_flags -linkall)
  (modules_without_implementation
-   graphviz_intf
    location_intf)
  (libraries
    ;; opam libraries
diff --git a/src/lib/merkle_ledger/graphviz.ml b/src/lib/merkle_ledger/graphviz.ml
index 15f32f4fe3e7..950ad5eb88bb 100644
--- a/src/lib/merkle_ledger/graphviz.ml
+++ b/src/lib/merkle_ledger/graphviz.ml
@@ -1,8 +1,8 @@
 open Core
 open Async
 
-module Make (Inputs : Graphviz_intf.Inputs_intf) :
-  Graphviz_intf.S
+module Make (Inputs : Intf.Graphviz.I) :
+  Intf.Graphviz.S
     with type addr := Inputs.Location.Addr.t
      and type ledger := Inputs.Ledger.t = struct
   open Inputs
diff --git a/src/lib/merkle_ledger/graphviz.mli b/src/lib/merkle_ledger/graphviz.mli
index c1148e59471c..86a52fa54c5a 100644
--- a/src/lib/merkle_ledger/graphviz.mli
+++ b/src/lib/merkle_ledger/graphviz.mli
@@ -1,6 +1,6 @@
 (** Visualizable_ledger shows a subgraph of a merkle_ledger using Graphviz *)
 
-module Make (Inputs : Graphviz_intf.Inputs_intf) :
-  Graphviz_intf.S
+module Make (Inputs : Intf.Graphviz.I) :
+  Intf.Graphviz.S
     with type addr := Inputs.Location.Addr.t
      and type ledger := Inputs.Ledger.t
diff --git a/src/lib/merkle_ledger/graphviz_intf.mli b/src/lib/merkle_ledger/graphviz_intf.mli
deleted file mode 100644
index 9a529ac3ffe9..000000000000
--- a/src/lib/merkle_ledger/graphviz_intf.mli
+++ /dev/null
@@ -1,45 +0,0 @@
-module type S = sig
-  type addr
-
-  type ledger
-
-  type t
-
-  (* Visualize will enumerate through all edges of a subtree with a
-     initial_address. It will then interpret all of the edges and nodes into an
-     intermediate form that will be easy to write into a dot file *)
-  val visualize : ledger -> initial_address:addr -> t
-
-  (* Write will transform the intermediate form generate by visualize and save
-     the results into a dot file *)
-  val write : path:string -> name:string -> t -> unit Async.Deferred.t
-end
-
-module type Inputs_intf = sig
-  module Key : Intf.Key
-
-  module Token_id : Intf.Token_id
-
-  module Account_id :
-    Intf.Account_id with type key := Key.t and type token_id := Token_id.t
-
-  module Balance : Intf.Balance
-
-  module Account :
-    Intf.Account
-      with type account_id := Account_id.t
-       and type balance := Balance.t
-
-  module Hash : Intf.Hash with type account := Account.t
-
-  module Location : Location_intf.S
-
-  module Ledger :
-    Intf.Ledger.S
-      with module Addr = Location.Addr
-       and module Location = Location
-       and type account_id := Account_id.t
-       and type account_id_set := Account_id.Set.t
-       and type hash := Hash.t
-       and type account := Account.t
-end
diff --git a/src/lib/merkle_ledger/intf.ml b/src/lib/merkle_ledger/intf.ml
index 8ce304479528..f12ee1c5e084 100644
--- a/src/lib/merkle_ledger/intf.ml
+++ b/src/lib/merkle_ledger/intf.ml
@@ -440,3 +440,35 @@ module Ledger = struct
     end
   end
 end
+
+module Graphviz = struct
+  module type S = sig
+    type addr
+
+    type ledger
+
+    type t
+
+    (* Visualize will enumerate through all edges of a subtree with a
+       initial_address. It will then interpret all of the edges and nodes into an
+       intermediate form that will be easy to write into a dot file *)
+    val visualize : ledger -> initial_address:addr -> t
+
+    (* Write will transform the intermediate form generate by visualize and save
+       the results into a dot file *)
+    val write : path:string -> name:string -> t -> unit Async.Deferred.t
+  end
+
+  module type I = sig
+    include Inputs.Intf
+
+    module Ledger :
+      Ledger.S
+        with module Addr = Location.Addr
+         and module Location = Location
+         and type account_id := Account_id.t
+         and type account_id_set := Account_id.Set.t
+         and type hash := Hash.t
+         and type account := Account.t
+  end
+end