diff --git a/module/zfs/vdev_raidz.c b/module/zfs/vdev_raidz.c
index 64c1564bfd..cbabb84020 100644
--- a/module/zfs/vdev_raidz.c
+++ b/module/zfs/vdev_raidz.c
@@ -1638,8 +1638,11 @@ raidz_checksum_verify(zio_t *zio)
 {
 	zio_bad_cksum_t zbc;
 	raidz_map_t *rm = zio->io_vsd;
+	int ret;
 
-	int ret = zio_checksum_error(zio, &zbc);
+	bzero(&zbc, sizeof (zio_bad_cksum_t));
+
+	ret = zio_checksum_error(zio, &zbc);
 	if (ret != 0 && zbc.zbc_injected != 0)
 		rm->rm_ecksuminjected = 1;