diff --git a/test/function/includes-internally-used-default-export/_config.js b/test/function/includes-internally-used-default-export/_config.js
new file mode 100644
index 0000000..3eab340
--- /dev/null
+++ b/test/function/includes-internally-used-default-export/_config.js
@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'includes default exports that are only used internally'
+};
diff --git a/test/function/includes-internally-used-default-export/main.js b/test/function/includes-internally-used-default-export/main.js
new file mode 100644
index 0000000..c196b10
--- /dev/null
+++ b/test/function/includes-internally-used-default-export/main.js
@@ -0,0 +1,3 @@
+import { b } from './module.js';
+
+assert.equal(b(), 15);
diff --git a/test/function/includes-internally-used-default-export/module.js b/test/function/includes-internally-used-default-export/module.js
new file mode 100644
index 0000000..8f3524b
--- /dev/null
+++ b/test/function/includes-internally-used-default-export/module.js
@@ -0,0 +1,7 @@
+export default function a() {
+  return 5;
+}
+
+export function b() {
+  return a() + 10;
+}