diff --git a/README.md b/README.md
index b478419..a76bada 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ bool SingleApplication::sendMessage( QByteArray message, int timeout = 100 )
 
 Sends `message` to the Primary Instance. Uses `timeout` as a the maximum timeout
 in milliseconds for blocking functions. Returns `true` if the message has been sent
-successfully.
+successfully. If the message can't be sent or the function timeouts - returns `false`.
 
 ---