diff --git a/src/checkData.js b/src/checkData.js
index da43c1d..f479877 100644
--- a/src/checkData.js
+++ b/src/checkData.js
@@ -1,13 +1,13 @@
 import { validate, format } from '@sumor/validator'
 import APIError from './i18n/APIError.js'
 
-export default (data, apiInfo) => {
+export default (data, apiParameters) => {
   let errors = []
-  for (const key in apiInfo.parameters) {
-    data[key] = format(apiInfo.parameters[key], data[key])
+  for (const key in apiParameters) {
+    data[key] = format(apiParameters[key], data[key])
     const fieldErrors = validate(
       {
-        ...apiInfo.parameters[key],
+        ...apiParameters[key],
         error: true
       },
       data[key]
diff --git a/test/check.test.js b/test/check.test.js
index 7a546dc..d0ff21a 100644
--- a/test/check.test.js
+++ b/test/check.test.js
@@ -7,10 +7,8 @@ describe('check', () => {
         text: ' demo '
       },
       {
-        parameters: {
-          text: {
-            type: 'string'
-          }
+        text: {
+          type: 'string'
         }
       }
     )
@@ -18,11 +16,9 @@ describe('check', () => {
   })
   it('error', () => {
     const definition = {
-      parameters: {
-        text: {
-          type: 'string',
-          length: 4
-        }
+      text: {
+        type: 'string',
+        length: 4
       }
     }
     let error