diff --git a/src/main/translate/Api.ts b/src/main/translate/Api.ts
index 709bf94..93d9c54 100644
--- a/src/main/translate/Api.ts
+++ b/src/main/translate/Api.ts
@@ -116,7 +116,11 @@ export default class Api implements yuki.Translator {
     const scriptString = this.config.responseBodyPattern
       .substring(1)
       .replace('%RESPONSE%', `result = response`)
-    vm.runInNewContext(scriptString, this.responseVmContext)
+    try {
+      vm.runInNewContext(scriptString, this.responseVmContext)
+    } catch (e) {
+      return `ERR: ${e}`
+    }
     return this.responseVmContext.result
   }
 
diff --git a/test/unit/specs/main/Api.spec.ts b/test/unit/specs/main/Api.spec.ts
index a723430..a369f97 100644
--- a/test/unit/specs/main/Api.spec.ts
+++ b/test/unit/specs/main/Api.spec.ts
@@ -59,7 +59,7 @@ describe('Api', () => {
             expect(translations.translations.googleCN).to.equal('如果捕获了尤马坤，则为210日元。我知道了 ...')
             expect(translations.translations.caiyun).to.be.oneOf([
               '攻下悠真的话是210日元吗。 原来如此',
-              undefined
+              "ERR: TypeError: Cannot read property 'target' of undefined"
             ])
           } catch (e) {
             return done(e)