diff --git a/README.md b/README.md
index b4429e6..f5bbac1 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ core:
   worker_num: 0 # default worker number is runtime.NumCPU()
   queue_num: 0 # default queue number is 8192
   max_notification: 100
-  sync: false # set true if you get http response after finish send notification.
+  sync: false # set true if you need error logs from send fail of notifications.
   mode: "release"
   ssl: false
   cert_path: "cert.pem"
diff --git a/config/config.yml b/config/config.yml
index 81191ac..dc57cc5 100644
--- a/config/config.yml
+++ b/config/config.yml
@@ -3,7 +3,7 @@ core:
   worker_num: 0 # default worker number is runtime.NumCPU()
   queue_num: 0 # default queue number is 8192
   max_notification: 100
-  sync: false # set true if you get http response after finish send notification.
+  sync: false # set true if you need error logs from send fail of notifications.
   mode: "release"
   ssl: false
   cert_path: "cert.pem"