diff --git a/src/dune b/src/dune
index 0a6fa0ea..4c947c3a 100644
--- a/src/dune
+++ b/src/dune
@@ -8,6 +8,7 @@
  (name mte)
  (wrapped false)
  (modules :standard \ mte b32)
+ (modules_without_implementation mod_intf)
  (libraries
   b32
   ;
diff --git a/src/keys.ml b/src/keys.ml
index f7014a81..ef587b4b 100644
--- a/src/keys.ml
+++ b/src/keys.ml
@@ -1,7 +1,7 @@
 (* TODO better error type *)
 type 'a result = ('a, string) Result.t
 
-module type S = Keys_intf.S
+module type S = Mod_intf.S
 
 module Make (Conn : Pg.CONN) = struct
   open Syntax
diff --git a/src/keys.mli b/src/keys.mli
index 50b891d4..d2424c07 100644
--- a/src/keys.mli
+++ b/src/keys.mli
@@ -1,3 +1,3 @@
-module type S = Keys_intf.S
+module type S = Mod_intf.S
 
 module Make (_ : Pg.CONN) : S
diff --git a/src/keys_intf.ml b/src/mod_intf.mli
similarity index 100%
rename from src/keys_intf.ml
rename to src/mod_intf.mli