diff --git a/project/paint_robot_new/paint_robot_new.c b/project/paint_robot_new/paint_robot_new.c
index 3d23b95..5f40d0f 100644
--- a/project/paint_robot_new/paint_robot_new.c
+++ b/project/paint_robot_new/paint_robot_new.c
@@ -156,7 +156,7 @@ int check_PV(char *_pBuffer, uint32_t _iSize)
     uint16_t crc_check1 = Rd_modbusCRC16((uint8_t *)_pBuffer, _iSize - 2);
     if (crc_check == crc_check1)
     {
-        return _iSize - 2;
+        return _iSize;
     }
     else
     {