diff --git a/README.md b/README.md
index 7c179bb..0c25620 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ int main() {
 
 	c.credentials("<your-client-id>", "<client-username>", "<client-pwd>")
 		.brokers("<your-mqtt-broker>", 1883)
-		.async_run(asio::detached);
+		.async_run(boost::asio::detached);
 
 	c.async_publish<async_mqtt5::qos_e::at_most_once>(
 		"<topic>", "Hello world!",