diff --git a/module/os/freebsd/zfs/vdev_geom.c b/module/os/freebsd/zfs/vdev_geom.c
index 2353c4600..6ac37da1c 100644
--- a/module/os/freebsd/zfs/vdev_geom.c
+++ b/module/os/freebsd/zfs/vdev_geom.c
@@ -381,7 +381,11 @@ vdev_geom_io(struct g_consumer *cp, int *cmds, void **datas, off_t *offsets,
 	int i, n_bios, j;
 	size_t bios_size;
 
+#if __FreeBSD_version > 1300130
+	maxio = maxphys - (maxphys % cp->provider->sectorsize);
+#else
 	maxio = MAXPHYS - (MAXPHYS % cp->provider->sectorsize);
+#endif
 	n_bios = 0;
 
 	/* How many bios are required for all commands ? */