diff --git a/README.md b/README.md
index 442e115..1ad1a80 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ val service = registerService(
 )
 while (true) {
     service.broadcast()
-    delay(2000L) // or use cn.rtast.nmdns.sleep1(2) sleep 2 seconds
+    delay(2000L) // or use cn.rtast.nmdns.sleep1(2) sleep 2 seconds, this function is not a suspended function
 }
 ```
 
@@ -105,4 +105,4 @@ int main() {
     }
     return 0;
 }
-```
\ No newline at end of file
+```