diff --git a/core/Tron.proto b/core/Tron.proto
index 63b25d951a2..4b5d5446c7e 100644
--- a/core/Tron.proto
+++ b/core/Tron.proto
@@ -122,7 +122,7 @@ message ChainInventory {
     bytes hash = 1;
     int64 number = 2;
   }
-  repteated BlockId ids = 1;
+  repeated BlockId ids = 1;
   int64 remain_num = 2;
 }