diff --git a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_sdram.c b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_sdram.c
index 04bb970b50..6739e68ce2 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drivers/drv_sdram.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drivers/drv_sdram.c
@@ -9,6 +9,7 @@
  */
 
 #include <board.h>
+#include <rtthread.h>
 
 #ifdef BSP_USING_SDRAM
 #include <sdram_port.h>