diff --git a/weixin-java-open/src/main/java/me/chanjar/weixin/open/api/WxOpenComponentService.java b/weixin-java-open/src/main/java/me/chanjar/weixin/open/api/WxOpenComponentService.java
index 9dc5a6d3d..39d1b4e64 100644
--- a/weixin-java-open/src/main/java/me/chanjar/weixin/open/api/WxOpenComponentService.java
+++ b/weixin-java-open/src/main/java/me/chanjar/weixin/open/api/WxOpenComponentService.java
@@ -33,7 +33,7 @@ public interface WxOpenComponentService {
   /**
    * 刷新oauth2的access token
    */
-  String OAUTH2_REFRESH_TOKEN_URL = "https://api.weixin.qq.com/sns/oauth2/component/refresh_token?appid=%s&grant_type=refresh_token&refresh_token=%s&component_appid==%s";
+  String OAUTH2_REFRESH_TOKEN_URL = "https://api.weixin.qq.com/sns/oauth2/component/refresh_token?appid=%s&grant_type=refresh_token&refresh_token=%s&component_appid=%s";
 
   WxMpService getWxMpServiceByAppid(String appid);