diff --git a/packages/compartment-mapper/src/import-archive-lite.js b/packages/compartment-mapper/src/import-archive-lite.js
index 774e8e0773..6d48630f7d 100644
--- a/packages/compartment-mapper/src/import-archive-lite.js
+++ b/packages/compartment-mapper/src/import-archive-lite.js
@@ -230,32 +230,6 @@ const makeArchiveImportHookMaker = (
   return makeImportHook;
 };
 
-/**
- * Creates a fake module namespace object that passes a brand check.
- *
- * @param {typeof Compartment} Compartment
- * @returns {ModuleExportsNamespace}
- */
-const makeFauxModuleExportsNamespace = Compartment => {
-  const compartment = new Compartment(
-    {},
-    {},
-    {
-      resolveHook() {
-        return '.';
-      },
-      async importHook() {
-        return {
-          imports: [],
-          execute() {},
-          exports: [],
-        };
-      },
-    },
-  );
-  return compartment.module('.');
-};
-
 // Have to give it a name to capture the external meaning of Compartment
 // Otherwise @param {typeof Compartment} takes the Compartment to mean
 // the const variable defined within the function.
@@ -377,7 +351,7 @@ export const parseArchive = async (
       languageForExtension,
       modules: Object.fromEntries(
         Object.keys(modules || {}).map(specifier => {
-          return [specifier, makeFauxModuleExportsNamespace(Compartment)];
+          return [specifier, { namespace: {} }];
         }),
       ),
       Compartment,
diff --git a/packages/compartment-mapper/src/link.js b/packages/compartment-mapper/src/link.js
index c417c85974..f080687565 100644
--- a/packages/compartment-mapper/src/link.js
+++ b/packages/compartment-mapper/src/link.js
@@ -449,13 +449,14 @@ export const link = (
       scopes,
     );
 
-    const compartment = new Compartment(create(null), undefined, {
+    const compartment = new Compartment({
+      name: location,
       resolveHook,
       importHook,
       moduleMapHook,
       transforms,
       __shimTransforms__,
-      name: location,
+      __options__: true,
     });
 
     if (!archiveOnly) {
diff --git a/packages/compartment-mapper/test/bundle.test.js b/packages/compartment-mapper/test/bundle.test.js
index 2fcf01e692..abc5fc0075 100644
--- a/packages/compartment-mapper/test/bundle.test.js
+++ b/packages/compartment-mapper/test/bundle.test.js
@@ -61,7 +61,10 @@ test('bundles work', async t => {
   const print = entry => {
     log.push(entry);
   };
-  const compartment = new Compartment({ print });
+  const compartment = new Compartment({
+    globals: { print },
+    __options__: true,
+  });
   compartment.evaluate(bundle);
   t.deepEqual(log, expectedLog);
 });
@@ -93,7 +96,10 @@ test.failing('bundle cjs-compat', async t => {
   const print = entry => {
     log.push(entry);
   };
-  const compartment = new Compartment({ print });
+  const compartment = new Compartment({
+    globals: { print },
+    __options__: true,
+  });
   compartment.evaluate(bundle);
   t.deepEqual(log, expectedLog);
 });
diff --git a/packages/compartment-mapper/test/main.test.js b/packages/compartment-mapper/test/main.test.js
index 47e24585e6..8200845e4f 100644
--- a/packages/compartment-mapper/test/main.test.js
+++ b/packages/compartment-mapper/test/main.test.js
@@ -95,11 +95,14 @@ test('makeBundle / importArchive', async t => {
 
   const archiverBundle = await makeBundle(readPowers.read, archiverLocation);
   const archiverCompartment = new Compartment({
-    TextEncoder,
-    TextDecoder,
-    URL,
-    // See https://github.com/Agoric/agoric-sdk/issues/9515
-    assert: globalThis.assert,
+    globals: {
+      TextEncoder,
+      TextDecoder,
+      URL,
+      // See https://github.com/Agoric/agoric-sdk/issues/9515
+      assert: globalThis.assert,
+    },
+    __options__: true,
   });
   const evasiveArchiverBundle = archiverBundle
     .replace(/(?<!\.)\bimport\b(?![:"'])/g, 'IMPORT')