diff --git a/src/create-object.js b/src/create-object.js
index 5f77517..6805b64 100644
--- a/src/create-object.js
+++ b/src/create-object.js
@@ -3,14 +3,11 @@
 const createEventEmitter = require("create-event-emitter");
 const defaultValue = require("default-value");
 
-const validateSync = require("./validate-sync");
+const requireProperties = require("./require-properties");
 const calculateOriginOffsets = require("./calculate-origin-offsets");
 
 module.exports = function createObject(options) {
-	validateSync(options, {
-		type: "required",
-		onRecalculateSize: "required"
-	});
+	requireProperties(options, ["type", "onRecalculateSize"].concat(defaultValue(options.requiredProperties, [])));
 
 	let object = createEventEmitter(Object.assign({
 		isCached: false,