diff -r e8d58327cd7f -r d0aedc9be448 sources/network/rconsession.cpp
--- a/sources/network/rconsession.cpp	Wed Jul 20 15:07:57 2016 +0300
+++ b/sources/network/rconsession.cpp	Wed Jul 20 16:01:10 2016 +0300
@@ -324,7 +324,7 @@
 //
 bool RCONSession::send_command (const String& message)
 {
-	if (m_state != RCON_CONNECTED or message.is_empty())
+	if (m_state != RCON_CONNECTED or message.isEmpty())
 		return false;
 
 	Bytestream packet;