diff --git a/components/fal/src/fal_rtt.c b/components/fal/src/fal_rtt.c
index 9ef5be14401..1e2382acd7c 100644
--- a/components/fal/src/fal_rtt.c
+++ b/components/fal/src/fal_rtt.c
@@ -50,7 +50,7 @@ static rt_err_t blk_dev_control(rt_device_t dev, rt_uint8_t cmd, void *args)
             return -RT_ERROR;
         }
 
-        memcpy(geometry, &part->geometry, sizeof(struct rt_device_blk_geometry));
+        rt_memcpy(geometry, &part->geometry, sizeof(struct rt_device_blk_geometry));
     }
     else if (cmd == RT_DEVICE_CTRL_BLK_ERASE)
     {