diff --git a/ch341a_spi.c b/ch341a_spi.c
index b023562..9b07ef0 100644
--- a/ch341a_spi.c
+++ b/ch341a_spi.c
@@ -398,6 +398,7 @@
 	.read		= default_spi_read,
 	.write_256	= default_spi_write_256,
 	.shutdown	= ch341a_spi_shutdown,
+	.probe_opcode	= default_spi_probe_opcode,
 };
 
 static int ch341a_spi_shutdown(void *data)