diff --git a/src/rpc/inc/rpcHead.h b/src/rpc/inc/rpcHead.h
index 6bbd72f09988b2df5e6db8786b0b813c10d74570..5b401ac54be194a38bad2f7680155f5edb8350b4 100644
--- a/src/rpc/inc/rpcHead.h
+++ b/src/rpc/inc/rpcHead.h
@@ -16,9 +16,6 @@
 #ifndef TDENGINE_RPCHEAD_H
 #define TDENGINE_RPCHEAD_H
 
-#define TSDB_MSG_TYPE_PROBE_CONN     0xFE
-#define TSDB_MSG_TYPE_PROBE_CONN_RSP 0xFF
-
 #ifdef __cplusplus
 extern "C" {
 #endif