diff --git a/examples/contextlost/main.go b/examples/contextlost/main.go
index 2f15a72f6..2c252def3 100644
--- a/examples/contextlost/main.go
+++ b/examples/contextlost/main.go
@@ -53,7 +53,7 @@ func loseAndRestoreContext(context js.Value) {
 	// Edge might not support the extension. See
 	// https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_lose_context
 	ext := context.Call("getExtension", "WEBGL_lose_context")
-	if ext == js.Null() {
+	if ext.IsNull() {
 		fmt.Println("Fail to force context lost. Edge might not support the extension yet.")
 		return
 	}
@@ -79,11 +79,13 @@ func update(screen *ebiten.Image) error {
 	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
 		doc := js.Global().Get("document")
 		canvas := doc.Call("getElementsByTagName", "canvas").Index(0)
-		context := canvas.Call("getContext", "webgl")
-		if context == js.Null() {
-			context = canvas.Call("getContext", "experimental-webgl")
+		context := canvas.Call("getContext", "webgl2")
+		if context.IsNull() {
+			context = canvas.Call("getContext", "webgl")
+			if context.IsNull() {
+				context = canvas.Call("getContext", "experimental-webgl")
+			}
 		}
-
 		loseAndRestoreContext(context)
 		return nil
 	}