diff --git a/auth/v1/msg.proto b/auth/v1/msg.proto
index 4de3dfc..4f8bf29 100644
--- a/auth/v1/msg.proto
+++ b/auth/v1/msg.proto
@@ -235,7 +235,7 @@ message CheckTFAReq {
 message TFA {
   TfaStateEnum state = 1;
   int64 code = 2;
-  uint64 id = 3;
+  int64 id = 3;
 }
 
 enum TfaStateEnum {