diff --git a/src/a02-assertions/package.json b/src/a02-assertions/package.json
index b4ba476..533b0f8 100644
--- a/src/a02-assertions/package.json
+++ b/src/a02-assertions/package.json
@@ -9,7 +9,7 @@
   },
   "scripts": {
     "test": "node --test",
-    "verify": "node  --test --loader=./verifiers/loader.js ./verifiers/handler.js"
+    "verify": "node  --test --loader=../../verify/loader.js ./verifiers/handler.js"
   },
   "keywords": [],
   "author": "",
diff --git a/src/a02-assertions/verifiers/index.verify.js b/src/a02-assertions/verifiers/index.verify.js
deleted file mode 100644
index 4f1cb31..0000000
--- a/src/a02-assertions/verifiers/index.verify.js
+++ /dev/null
@@ -1,8 +0,0 @@
-import {
-  sum as originalSum,
-  sumAsync as originalSumAsync
-} from '../src/index.js'
-import { mock } from 'node:test'
-
-export const sum = mock.fn(originalSum)
-export const sumAsync = mock.fn(originalSumAsync)
diff --git a/verify/loader.js b/verify/loader.js
new file mode 100644
index 0000000..1e1deef
--- /dev/null
+++ b/verify/loader.js
@@ -0,0 +1,32 @@
+import path from 'path'
+
+async function resolve(url, context, defaultResolve) {
+  // To avoid circular dependencies
+  // We suppose that all the verifiers include "verify" in the name
+  if (
+    typeof context.parentURL !== 'undefined' &&
+    context.parentURL.includes('verify')
+  ) {
+    return defaultResolve(url, context, defaultResolve)
+  }
+
+  const modulesToPatch = {
+    'node:test': './test.verify.js',
+    'node:assert': './assert.verify.js',
+    // We're always mocking the src in order to spy the calls
+    '../src/index.js': path.join(process.cwd(), 'verifiers', 'index.verify.js')
+  }
+
+  if (Object.keys(modulesToPatch).includes(url)) {
+    return defaultResolve(
+      new URL(modulesToPatch[url], import.meta.url).href,
+      context,
+      defaultResolve
+    )
+  }
+
+  // For all other modules, use the default loader
+  return defaultResolve(url, context, defaultResolve)
+}
+
+export { resolve }