diff --git a/bitbang_spi.c b/bitbang_spi.c
index 610dc28..a377eb2 100644
--- a/bitbang_spi.c
+++ b/bitbang_spi.c
@@ -117,7 +117,7 @@
 
 	data->mst = master;
 	data->spi_data = spi_data;
-	register_spi_master(&mst, data);
+	register_spi_master(&mst, 0, data);
 
 	/* Only mess with the bus if we're sure nobody else uses it. */
 	bitbang_spi_request_bus(master, spi_data);