diff --git a/src/lib/assert.js b/src/lib/assert.js
index a1cfc89..37eef16 100644
--- a/src/lib/assert.js
+++ b/src/lib/assert.js
@@ -20,8 +20,9 @@
 * THE SOFTWARE.
 */
 // @ts-check
-class AssertionFailedException {
+class AssertionFailedException extends Error {
   constructor() {
+    super();
     // Use V8's native method if available, otherwise fallback
     if ('captureStackTrace' in Error) {
       Error.captureStackTrace(this, AssertionFailedException);