diff --git a/src/layer.ml b/src/layer.ml
index 8475a90..69b0f7d 100644
--- a/src/layer.ml
+++ b/src/layer.ml
@@ -110,7 +110,7 @@ let geojson_opt_to_jv = function
   | Filter f -> Jv.repr f
   | Coords_to_latlng f -> Jv.repr f
 
-let create_geojson : Jv.t -> geojson_opt array -> [ `Geojson ] t =
+let create_geojson : Brr.Json.t -> geojson_opt array -> [ `Geojson ] t =
  fun geojson options ->
   let l =
     Array.map (fun o -> (geojson_opt_to_string o, geojson_opt_to_jv o)) options
diff --git a/src/layer.mli b/src/layer.mli
index b2da3ae..e01be64 100644
--- a/src/layer.mli
+++ b/src/layer.mli
@@ -62,7 +62,7 @@ type geojson_opt =
   | Markers_inherit_options of bool
 
 (** [create_geojson geojson] is a new geojson layer *)
-val create_geojson : Jv.t -> geojson_opt array -> [ `Geojson ] t
+val create_geojson : Brr.Json.t -> geojson_opt array -> [ `Geojson ] t
 
 (** Tile layers *)