diff --git a/lib/evaluateSnippets.js b/lib/evaluateSnippets.js
index 6576ffa..8ee3863 100644
--- a/lib/evaluateSnippets.js
+++ b/lib/evaluateSnippets.js
@@ -28,11 +28,7 @@ try {
 }
 
 function isPromise(value) {
-  return (
-    value &&
-    typeof value.then === 'function' &&
-    typeof value.caught === 'function'
-  );
+  return value && typeof value.then === 'function';
 }
 
 function getErrorMessage(expect, format, error) {
@@ -110,6 +106,7 @@ module.exports = async function(snippets, options) {
               ? snippet.code
               : `(function () {${transpile(snippet.code)}})();`
           );
+
           if (!isPromise(promise)) {
             throw new Error(
               `Async code block did not return a promise or throw\n${snippet.code}`