diff --git a/src/tokenType.mli b/src/tokenType.mli
index a6fb7506343a8f17abb7a089928821d6fc43ea66..23ba867288f25f0ffde75018144c97ae660c6c0d 100644
--- a/src/tokenType.mli
+++ b/src/tokenType.mli
@@ -2,8 +2,6 @@
    the [token] type. In particular, if [--only-tokens] was specified,
    it emits the type definition and exits. *)
 
-open Grammar
-
 (* This is the conventional name of the [token] type, for use by
    the code generator. *)