diff --git a/core/zoe/zoe/zoe.js b/core/zoe/zoe/zoe.js
index e9247e8222d..7840415e808 100644
--- a/core/zoe/zoe/zoe.js
+++ b/core/zoe/zoe/zoe.js
@@ -234,9 +234,22 @@ const makeZoe = async (additionalEndowments = {}) => {
     /**
      * Create an installation by safely evaluating the code and
      * registering it with Zoe.
+     *
+     * We have a moduleFormat to allow for different future formats
+     * without silent failures.
      */
-    install: code => {
-      const installation = evalContractCode(code, additionalEndowments);
+    install: (code, moduleFormat = 'getExport') => {
+      let installation;
+      switch (moduleFormat) {
+        case 'getExport': {
+          installation = evalContractCode(code, additionalEndowments);
+          break;
+        }
+        default: {
+          insist(false)`\
+Unimplemented installation moduleFormat ${moduleFormat}`;
+        }
+      }
       const installationHandle = adminState.addInstallation(installation);
       return installationHandle;
     },
diff --git a/test/swingsetTests/zoe/test-zoe.js b/test/swingsetTests/zoe/test-zoe.js
index 8008688b494..c990a3a267c 100644
--- a/test/swingsetTests/zoe/test-zoe.js
+++ b/test/swingsetTests/zoe/test-zoe.js
@@ -108,7 +108,7 @@ test('zoe - coveredCall - valid inputs - with SES', async t => {
   }
 });
 
-test.only('zoe - coveredCall - valid inputs - no SES', async t => {
+test('zoe - coveredCall - valid inputs - no SES', async t => {
   try {
     const startingExtents = [[3, 0], [0, 7]];
     const dump = await main(false, 'zoe', [