diff --git a/src/hardware/testo/api.c b/src/hardware/testo/api.c
index cea44a34..b208ff72 100644
--- a/src/hardware/testo/api.c
+++ b/src/hardware/testo/api.c
@@ -119,7 +119,6 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 		sdi->status = SR_ST_INACTIVE;
 		sdi->vendor = g_strdup("Testo");
 		sdi->model = g_strdup("435/635/735");
-		sdi->driver = di;
 		sdi->inst_type = SR_INST_USB;
 		sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 				libusb_get_device_address(devlist[i]), NULL);