diff --git a/lib/6to5/transformation/transformers/optional-self-contained.js b/lib/6to5/transformation/transformers/optional-self-contained.js
index 7fe1b5b4d9..0ab0cdbd3a 100644
--- a/lib/6to5/transformation/transformers/optional-self-contained.js
+++ b/lib/6to5/transformation/transformers/optional-self-contained.js
@@ -23,7 +23,7 @@ exports.optional = true;
 
 exports.ast = {
   enter: function (ast, file) {
-    file.opts.runtime = file.addImport("6to5-runtime/6to5", "to5Runtime").name;
+    file.opts.runtime = file.addImport("6to5-runtime/helpers", "to5Runtime").name;
     file._coreId = file.addImport("6to5-runtime/core-js", "core");
     file._regeneratorId = file.addImport("6to5-runtime/regenerator", "regeneratorRuntime");
   },
diff --git a/test/fixtures/transformation/optional-self-contained/aliased-constructors/expected.js b/test/fixtures/transformation/optional-self-contained/aliased-constructors/expected.js
index 2b56ea0257..2242afb8f8 100644
--- a/test/fixtures/transformation/optional-self-contained/aliased-constructors/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/aliased-constructors/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");
 
diff --git a/test/fixtures/transformation/optional-self-contained/es6-for-of/expected.js b/test/fixtures/transformation/optional-self-contained/es6-for-of/expected.js
index c520e9da0a..4d781e1d60 100644
--- a/test/fixtures/transformation/optional-self-contained/es6-for-of/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/es6-for-of/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");
 
diff --git a/test/fixtures/transformation/optional-self-contained/es7-array-comprehensions/expected.js b/test/fixtures/transformation/optional-self-contained/es7-array-comprehensions/expected.js
index 1a7d5c5482..374a18cb98 100644
--- a/test/fixtures/transformation/optional-self-contained/es7-array-comprehensions/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/es7-array-comprehensions/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");
 
diff --git a/test/fixtures/transformation/optional-self-contained/full/expected.js b/test/fixtures/transformation/optional-self-contained/full/expected.js
index 5c31f034a6..8caafa65b9 100644
--- a/test/fixtures/transformation/optional-self-contained/full/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/full/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");
 
diff --git a/test/fixtures/transformation/optional-self-contained/regenerator-runtime/expected.js b/test/fixtures/transformation/optional-self-contained/regenerator-runtime/expected.js
index 92dc0c8704..e7fa729a14 100644
--- a/test/fixtures/transformation/optional-self-contained/regenerator-runtime/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/regenerator-runtime/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");
 
diff --git a/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js b/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js
index 928902ba02..292e6b96cf 100644
--- a/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js
@@ -1,4 +1,4 @@
-define(["exports", "6to5-runtime/6to5", "6to5-runtime/core-js", "6to5-runtime/regenerator", "someModule"], function (exports, _to5Runtime, _core, _regeneratorRuntime, _someModule) {
+define(["exports", "6to5-runtime/helpers", "6to5-runtime/core-js", "6to5-runtime/regenerator", "someModule"], function (exports, _to5Runtime, _core, _regeneratorRuntime, _someModule) {
   "use strict";
 
   var foo = _to5Runtime.interopRequire(_someModule);
diff --git a/test/fixtures/transformation/optional-self-contained/runtime-commonjs/expected.js b/test/fixtures/transformation/optional-self-contained/runtime-commonjs/expected.js
index 9fd1cd7ec9..d7a8de73f8 100644
--- a/test/fixtures/transformation/optional-self-contained/runtime-commonjs/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/runtime-commonjs/expected.js
@@ -1,6 +1,6 @@
 "use strict";
 
-var _to5Runtime = require("6to5-runtime/6to5");
+var _to5Runtime = require("6to5-runtime/helpers");
 
 var _core = require("6to5-runtime/core-js");