diff --git a/src/mc/include/mc/can_struct.h b/src/mc/include/mc/can_struct.h
index 3329dda..56399ea 100644
--- a/src/mc/include/mc/can_struct.h
+++ b/src/mc/include/mc/can_struct.h
@@ -392,7 +392,7 @@ struct can_main_Brush_cmd
 
     can_main_Brush_cmd()
     {
-        data[3] = 1; // 固定字节初始化
+        data[2] = 1; // 固定字节初始化
     }
 
     Byte0 &byte0() { return *reinterpret_cast<Byte0 *>(&data[0]); }
@@ -465,7 +465,7 @@ struct can_edge_Brush_cmd
 
     can_edge_Brush_cmd()
     {
-        data[3] = 1; // 固定字节初始化
+        data[2] = 1; // 固定字节初始化
     }
 
     Byte0 &byte0() { return *reinterpret_cast<Byte0 *>(&data[0]); }