diff --git a/src/bun.js/modules/AbortControllerModuleModule.h b/src/bun.js/modules/AbortControllerModuleModule.h
index 07c8ccea03..31cd3d23de 100644
--- a/src/bun.js/modules/AbortControllerModuleModule.h
+++ b/src/bun.js/modules/AbortControllerModuleModule.h
@@ -41,14 +41,14 @@ inline void generateNativeModule_AbortControllerModule(
   // https://github.com/mysticatea/abort-controller/blob/a935d38e09eb95d6b633a8c42fcceec9969e7b05/dist/abort-controller.js#L125
   abortController->putDirect(
       vm, signalIdent, abortSignal,
-      static_cast<unsigned>(PropertyAttribute::DontEnum));
+      static_cast<unsigned>(PropertyAttribute::DontDelete));
 
   abortController->putDirect(
       vm, controllerIdent, abortController,
-      static_cast<unsigned>(PropertyAttribute::DontEnum));
+      static_cast<unsigned>(PropertyAttribute::DontDelete));
 
   abortController->putDirect(
       vm, vm.propertyNames->defaultKeyword, abortController,
-      static_cast<unsigned>(PropertyAttribute::DontEnum));
+      static_cast<unsigned>(PropertyAttribute::DontDelete));
 }
 } // namespace Zig
diff --git a/test/regression/issue/09739.test.ts b/test/regression/issue/09739.test.ts
new file mode 100644
index 0000000000..e89b0a1ce3
--- /dev/null
+++ b/test/regression/issue/09739.test.ts
@@ -0,0 +1,12 @@
+import { test, expect } from "bun:test";
+const node_js_shim = require("./abort-controller-fixture");
+
+test("AbortController from abort-controller fixture works when used with ESM -> CJS -> ESM", () => {
+  expect(node_js_shim.AbortController).toBe(AbortController);
+});
+
+test("AbortController from abort-controller fixture works when used with ESM -> ESM", async () => {
+  delete require.cache["abort-controller"];
+  const node_js_shim = await import("abort-controller");
+  expect(node_js_shim.AbortController).toBe(AbortController);
+});
diff --git a/test/regression/issue/abort-controller-fixture.js b/test/regression/issue/abort-controller-fixture.js
new file mode 100644
index 0000000000..7a5ee4a5e2
--- /dev/null
+++ b/test/regression/issue/abort-controller-fixture.js
@@ -0,0 +1,29 @@
+"use strict";
+var __createBinding =
+  (this && this.__createBinding) ||
+  (Object.create
+    ? function (o, m, k, k2) {
+        if (k2 === undefined) k2 = k;
+        var desc = Object.getOwnPropertyDescriptor(m, k);
+        if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+          desc = {
+            enumerable: true,
+            get: function () {
+              return m[k];
+            },
+          };
+        }
+        Object.defineProperty(o, k2, desc);
+      }
+    : function (o, m, k, k2) {
+        if (k2 === undefined) k2 = k;
+        o[k2] = m[k];
+      });
+var __exportStar =
+  (this && this.__exportStar) ||
+  function (m, exports) {
+    for (var p in m)
+      if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+  };
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("abort-controller"), exports);