diff --git a/test/fixtures/transformation/optional-external-regenerator-runtime/basic/actual.js b/test/fixtures/transformation/optional-external-regenerator-runtime/basic/actual.js
new file mode 100644
index 0000000000..ae6cc4d8c8
--- /dev/null
+++ b/test/fixtures/transformation/optional-external-regenerator-runtime/basic/actual.js
@@ -0,0 +1,2 @@
+void function* () {
+};
diff --git a/test/fixtures/transformation/optional-external-regenerator-runtime/basic/expected.js b/test/fixtures/transformation/optional-external-regenerator-runtime/basic/expected.js
new file mode 100644
index 0000000000..4121cc9700
--- /dev/null
+++ b/test/fixtures/transformation/optional-external-regenerator-runtime/basic/expected.js
@@ -0,0 +1,17 @@
+"use strict";
+
+var _interopRequire = function (obj) {
+  return obj && (obj["default"] || obj);
+};
+
+var _regeneratorRuntime = _interopRequire(require("regenerator/runtime-module"));
+
+void _regeneratorRuntime.mark(function callee$0$0() {
+  return _regeneratorRuntime.wrap(function callee$0$0$(context$1$0) {
+    while (1) switch (context$1$0.prev = context$1$0.next) {
+      case 0:
+      case "end":
+        return context$1$0.stop();
+    }
+  }, callee$0$0, this);
+});
diff --git a/test/fixtures/transformation/optional-external-regenerator-runtime/options.json b/test/fixtures/transformation/optional-external-regenerator-runtime/options.json
new file mode 100644
index 0000000000..40d336b5be
--- /dev/null
+++ b/test/fixtures/transformation/optional-external-regenerator-runtime/options.json
@@ -0,0 +1,3 @@
+{
+  "optional": ["externalRegenerator"]
+}