diff --git a/drivers/dma/sandbox-dma-test.c b/drivers/dma/sandbox-dma-test.c
index aebf3ee..2b8259a 100644
--- a/drivers/dma/sandbox-dma-test.c
+++ b/drivers/dma/sandbox-dma-test.c
@@ -39,9 +39,9 @@
 };
 
 static int sandbox_dma_transfer(struct udevice *dev, int direction,
-				void *dst, void *src, size_t len)
+				dma_addr_t dst, dma_addr_t src, size_t len)
 {
-	memcpy(dst, src, len);
+	memcpy((void *)dst, (void *)src, len);
 
 	return 0;
 }