diff --git a/lib/6to5/transformation/modules/amd.js b/lib/6to5/transformation/modules/amd.js
index 0eb61407b2..6d06ddbe46 100644
--- a/lib/6to5/transformation/modules/amd.js
+++ b/lib/6to5/transformation/modules/amd.js
@@ -87,7 +87,11 @@ AMDFormatter.prototype.importSpecifier = function (specifier, node, nodes) {
   var key = t.getSpecifierName(specifier);
   var ref = this._push(node);
 
-  if (t.isImportBatchSpecifier(specifier) || _.contains(this.file.dynamicImports, node)) {
+  if (_.contains(this.file.dynamicImports, node)) {
+    // Prevent unnecessary renaming of dynamic imports.
+    this.ids[node.source.value] = key;
+    return;
+  } else if (t.isImportBatchSpecifier(specifier)) {
     // import * as bar from "foo";
   } else if (t.isSpecifierDefault(specifier) && !this.noInteropRequire) {
     // import foo from "foo";
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 17b753e8c5..928902ba02 100644
--- a/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js
+++ b/test/fixtures/transformation/optional-self-contained/runtime-amd/expected.js
@@ -1,8 +1,5 @@
-define(["exports", "6to5-runtime/6to5", "6to5-runtime/core-js", "6to5-runtime/regenerator", "someModule"], function (exports, _to5Runtime6to5, _to5RuntimeCoreJs, _to5RuntimeRegenerator, _someModule) {
+define(["exports", "6to5-runtime/6to5", "6to5-runtime/core-js", "6to5-runtime/regenerator", "someModule"], function (exports, _to5Runtime, _core, _regeneratorRuntime, _someModule) {
   "use strict";
 
-  var _to5Runtime = _to5Runtime6to5;
-  var _core = _to5RuntimeCoreJs;
-  var _regeneratorRuntime = _to5RuntimeRegenerator;
   var foo = _to5Runtime.interopRequire(_someModule);
 });