diff --git a/__tests__/isDraftable.js b/__tests__/isDraftable.js
new file mode 100644
index 00000000..a125d7b0
--- /dev/null
+++ b/__tests__/isDraftable.js
@@ -0,0 +1,7 @@
+"use strict"
+import { isDraftable } from "../src/immer"
+
+test("non-plain object with undefined constructor doesn't error", () => {
+    const obj = Object.create(Object.create(null))
+    expect(isDraftable(obj).toBe(true);
+})
\ No newline at end of file