diff --git a/lib/MySQL_Protocol.cpp b/lib/MySQL_Protocol.cpp
index 8910ab63e..b373f66b1 100644
--- a/lib/MySQL_Protocol.cpp
+++ b/lib/MySQL_Protocol.cpp
@@ -1004,7 +1004,7 @@ bool MySQL_Protocol::generate_pkt_initial_handshake(bool send, void **ptr, unsig
   //srand(pthread_self());
   //uint32_t thread_id=rand()%100000;
   uint32_t thread_id=__sync_fetch_and_add(&glovars.thread_id,1);
-	if (_thread_id==0) {
+	if (thread_id==0) {
 		thread_id=__sync_fetch_and_add(&glovars.thread_id,1); // again!
 	}
 	*_thread_id=thread_id;