diff --git a/src/ReactTestRenderer.re b/src/ReactTestRenderer.re
index e5b4588bf..2c3494447 100644
--- a/src/ReactTestRenderer.re
+++ b/src/ReactTestRenderer.re
@@ -4,6 +4,7 @@ type t;
 external create: React.element => t = "create";
 
 [@mel.send] external toJSON: t => Js.Json.t = "toJSON";
+[@mel.send] external toObject: t => Js.t({..}) = "%identity";
 
 module Shallow = {
   type t;
diff --git a/src/ReactTestRenderer.rei b/src/ReactTestRenderer.rei
index ed7c0ebce..1e91c3160 100644
--- a/src/ReactTestRenderer.rei
+++ b/src/ReactTestRenderer.rei
@@ -4,6 +4,7 @@ type t;
 external create: React.element => t = "create";
 
 [@mel.send] external toJSON: t => Js.Json.t = "toJSON";
+[@mel.send] external toObject: t => Js.t({.}) = "%identity";
 
 module Shallow: {
   type t;
diff --git a/test/ReactTestRenderer__test.re b/test/ReactTestRenderer__test.re
index 2324b1dd9..2db87305d 100644
--- a/test/ReactTestRenderer__test.re
+++ b/test/ReactTestRenderer__test.re
@@ -1,7 +1,5 @@
 open Jest;
 
-external toObject: ReactTestRenderer.t => Js.t({.}) = "%identity";
-
 module Tester = {
   [@react.component]
   let make = () => <div> {React.string("Tester")} </div>;
@@ -12,7 +10,7 @@ describe("ReactTestRenderer", () => {
 
   test("create returns ReactTestInstance", () => {
     let component = ReactTestRenderer.create(<Tester />);
-    let keys = Js.Obj.keys(Obj.magic(component): Js.t({..}));
+    let keys = Js.Obj.keys(ReactTestRenderer.toObject(component));
 
     expect(keys)
     ->toEqual(