diff --git a/gensrc/thrift/FrontendService.thrift b/gensrc/thrift/FrontendService.thrift
index 9e43d35f8f1da0..a67bb59b80eb15 100644
--- a/gensrc/thrift/FrontendService.thrift
+++ b/gensrc/thrift/FrontendService.thrift
@@ -559,7 +559,7 @@ struct TLoadTxnBeginRequest {
     10: optional i64 timeout
     11: optional Types.TUniqueId request_id
     12: optional string token
-    13: optional i64 backend_id
+    15: optional i64 backend_id
 }
 
 struct TLoadTxnBeginResult {