diff --git a/composer.json b/composer.json
index d5f595c..c98001c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,26 +1,26 @@
 {
-  "name": "yiier/yii2-translate",
-  "description": "腾讯君翻译，腾讯 AI 翻译",
-  "type": "yii2-extension",
-  "keywords": [
-    "yii2",
-    "extension",
-    "translate"
-  ],
-  "license": "BSD-4-Clause",
-  "authors": [
-    {
-      "name": "forecho",
-      "email": "caizhenghai@gmail.com"
+    "name": "yiier/yii2-translate",
+    "description": "腾讯翻译君翻译、百度翻译 、谷歌翻译（Google 翻译）",
+    "type": "yii2-extension",
+    "keywords": [
+        "yii2",
+        "extension",
+        "translate"
+    ],
+    "license": "BSD-4-Clause",
+    "authors": [
+        {
+            "name": "forecho",
+            "email": "caizhenghai@gmail.com"
+        }
+    ],
+    "require": {
+        "yiisoft/yii2": "~2.0.0",
+        "guzzlehttp/guzzle": "^6.3"
+    },
+    "autoload": {
+        "psr-4": {
+            "yiier\\translate\\": "src"
+        }
     }
-  ],
-  "require": {
-    "yiisoft/yii2": "~2.0.0",
-    "guzzlehttp/guzzle": "^6.3"
-  },
-  "autoload": {
-    "psr-4": {
-      "yiier\\translate\\": "src"
-    }
-  }
 }
diff --git a/src/Factory.php b/src/Factory.php
index 3fcf788..e77b566 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -98,7 +98,7 @@ protected function formatPlatformClassName($name)
     protected function makePlatform($platform, $config)
     {
         if (!\class_exists($platform) || !\in_array(PlatformInterface::class, \class_implements($platform))) {
-            throw new InvalidArgumentException(\sprintf('Class "%s" is a invalid express platform.', $platform));
+            throw new InvalidArgumentException(\sprintf('Class "%s" is a invalid translate platform.', $platform));
         }
         return new $platform($config);
     }