diff --git a/vd960Loop/utilities/at32f421_freertos_demo/inc/TaskLoop.h b/vd960Loop/utilities/at32f421_freertos_demo/inc/TaskLoop.h
index b89ba1e..122ebef 100644
--- a/vd960Loop/utilities/at32f421_freertos_demo/inc/TaskLoop.h
+++ b/vd960Loop/utilities/at32f421_freertos_demo/inc/TaskLoop.h
@@ -203,7 +203,7 @@ void poll_yellow_led_single(Loop154_Unit *unit);
 uint32_t get_flt_value(uint32_t new_value, uint32_t last_Value);
 uint8_t update_moving_average(uint32_t* p_sum, uint16_t* p_cnt,
                               uint32_t* p_origin, uint32_t new_value,
-                              uint8_t window);
+                              uint16_t window);
 
 void set_loops_relay_on(uint8_t loop_num);
 void set_loops_relay_off(uint8_t loop_num);
diff --git a/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c b/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
index 4dde1c6..a6c58b2 100644
--- a/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
+++ b/vd960Loop/utilities/at32f421_freertos_demo/src/TaskLoop.c
@@ -49,7 +49,7 @@ uint32_t get_flt_value(uint32_t new_value, uint32_t last_Value)
  *===========================================================================*/
 uint8_t update_moving_average(uint32_t* p_sum, uint16_t* p_cnt,
                               uint32_t* p_origin, uint32_t new_value,
-                              uint8_t window)
+                              uint16_t window)
 {
     if (!p_sum || !p_cnt || !p_origin || window == 0) return 0;