diff --git a/lib/js/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.js b/lib/js/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.js
index fb3328a6..c38ad05d 100644
--- a/lib/js/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.js
+++ b/lib/js/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.js
@@ -15,15 +15,13 @@ $$event.stopPropagation();
 
 var Detail = {};
 
-var t = {
-  component: "test-component"
-};
-
 var EventWithDetail = Webapi__Dom__CustomEvent.Make(Detail);
 
 var eventWithDetail = new CustomEvent("event-with-detail");
 
-var eventWithOptions = new CustomEvent("event-with-detail", t);
+var eventWithOptions = new CustomEvent("event-with-detail", {
+      component: "test-component"
+    });
 
 Curry._1(EventWithDetail.eventPhase, eventWithDetail);
 
@@ -43,7 +41,6 @@ eventWithOptions.stopPropagation();
 
 exports.$$event = $$event;
 exports.Detail = Detail;
-exports.t = t;
 exports.EventWithDetail = EventWithDetail;
 exports.eventWithDetail = eventWithDetail;
 exports.eventWithOptions = eventWithOptions;
diff --git a/lib/js/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.js b/lib/js/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.js
index 7159a3d5..e9dec838 100644
--- a/lib/js/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.js
+++ b/lib/js/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.js
@@ -42,13 +42,11 @@ target.dispatchEvent(customEvent);
 
 var Detail = {};
 
-var t = {
-  test: "test"
-};
-
 var EventWithDetail = Webapi__Dom__CustomEvent.Make(Detail);
 
-var typedCustomEvent = new CustomEvent("event-with-detail", t);
+var typedCustomEvent = new CustomEvent("event-with-detail", {
+      test: "test"
+    });
 
 target.dispatchEvent(typedCustomEvent);
 
@@ -57,7 +55,6 @@ exports.$$event = $$event;
 exports.handleClick = handleClick;
 exports.customEvent = customEvent;
 exports.Detail = Detail;
-exports.t = t;
 exports.EventWithDetail = EventWithDetail;
 exports.typedCustomEvent = typedCustomEvent;
 /* target Not a pure module */
diff --git a/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.res b/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.res
index 73a007f0..e1d3af39 100644
--- a/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.res
+++ b/tests/Webapi/Dom/Webapi__Dom__CustomEvent__test.res
@@ -24,13 +24,12 @@ module Detail = {
   type t = {component: string}
 }
 
-let t: Detail.t = {
-  component: "test-component",
-}
-
 module EventWithDetail = Make(Detail)
 let eventWithDetail = EventWithDetail.make("event-with-detail")
-let eventWithOptions = EventWithDetail.makeWithOptions("event-with-detail", t)
+let eventWithOptions = EventWithDetail.makeWithOptions(
+  "event-with-detail",
+  {component: "test-component"},
+)
 
 /* Event */
 let _ = EventWithDetail.bubbles(eventWithDetail)
diff --git a/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.res b/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.res
index 9455d534..e6319ae5 100644
--- a/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.res
+++ b/tests/Webapi/Dom/Webapi__Dom__EventTarget__test.res
@@ -33,10 +33,6 @@ module Detail = {
   type t = {test: string}
 }
 
-let t: Detail.t = {
-  test: "test",
-}
-
 module EventWithDetail = CustomEvent.Make(Detail)
-let typedCustomEvent = EventWithDetail.makeWithOptions("event-with-detail", t)
+let typedCustomEvent = EventWithDetail.makeWithOptions("event-with-detail", {test: "test"})
 let _ = target->dispatchEvent(typedCustomEvent)