diff --git a/packages/core/src/server/flecks.js b/packages/core/src/server/flecks.js
index 0300036..554758c 100644
--- a/packages/core/src/server/flecks.js
+++ b/packages/core/src/server/flecks.js
@@ -152,18 +152,18 @@ export default class ServerFlecks extends Flecks {
     }
     // Stub server-unfriendly modules.
     const stubs = this.stubs(['server'], rcs);
-    if (stubs.length > 0) {
+    if (Object.keys(stubs).length > 0) {
       debug('stubbing: %O', stubs);
     }
     // Do we need to get up in `require()`'s guts?
     if (
       Object.keys(aliases).length > 0
-      || stubs.length > 0
+      || Object.keys(stubs).length > 0
     ) {
       const {Module} = R('module');
       const {require: Mr} = Module.prototype;
       Module.prototype.require = function hackedRequire(request, options) {
-        if (-1 !== stubs.indexOf(request)) {
+        if (stubs[request]) {
           return undefined;
         }
         if (aliases[request]) {
@@ -603,7 +603,7 @@ export default class ServerFlecks extends Flecks {
           });
       }
     }
-    return Object.keys(stubs);
+    return stubs;
   }
 
 }
diff --git a/packages/server/src/server/build/server.neutrinorc.js b/packages/server/src/server/build/server.neutrinorc.js
index 3a8f3e4..6cdf2cb 100644
--- a/packages/server/src/server/build/server.neutrinorc.js
+++ b/packages/server/src/server/build/server.neutrinorc.js
@@ -94,9 +94,9 @@ module.exports = (async () => {
   }
   // Stub out non-server-friendly modules on the server.
   const stubs = flecks.stubs();
-  if (stubs.length > 0) {
+  if (Object.keys(stubs).length > 0) {
     config.use.unshift(({config}) => {
-      stubs.forEach((path) => {
+      Object.keys(stubs).forEach((path) => {
         config.resolve.alias
           .set(path, '@flecks/core/empty');
       });
@@ -111,7 +111,7 @@ module.exports = (async () => {
       'const {Module} = require("module");',
       'const {require: Mr} = Module.prototype;',
       'Module.prototype.require = function hackedRequire(request, options) {',
-      '  if (-1 !== stubs.indexOf(request)) {',
+      '  if (stubs[request]) {',
       '    return undefined;',
       '  }',
       '  if (aliases[request]) {',