diff --git a/src/core/plugins/spec/actions.js b/src/core/plugins/spec/actions.js
index 6ec1ed9c..ae95b7ec 100644
--- a/src/core/plugins/spec/actions.js
+++ b/src/core/plugins/spec/actions.js
@@ -105,8 +105,7 @@ export const resolveSpec = (json, url) => ({specActions, specSelectors, errActio
       errActions.clear({
         type: "thrown"
       })
-
-      if(errors.length > 0) {
+      if(Array.isArray(errors) && errors.length > 0) {
         let preparedErrors = errors
           .map(err => {
             console.error(err)