diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index 51f912c142..8e0e910e08 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -727,7 +727,7 @@ dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
 		else
 			dmu_buf_will_dirty(db, tx);
 
-		bcopy(buf, (char *)db->db_data + bufoff, tocpy);
+		(void) memcpy((char *)db->db_data + bufoff, buf, tocpy);
 
 		if (tocpy == db->db_size)
 			dmu_buf_fill_done(db, tx);