diff --git a/firmware/hackrf_usb/hackrf_usb.c b/firmware/hackrf_usb/hackrf_usb.c
index 66cd23b2..b785eed1 100644
--- a/firmware/hackrf_usb/hackrf_usb.c
+++ b/firmware/hackrf_usb/hackrf_usb.c
@@ -201,7 +201,6 @@ void usb_configuration_changed(
 
 void usb_set_descriptor_by_serial_number(void)
 {
-#ifndef RAD1O
 	iap_cmd_res_t iap_cmd_res;
 	
 	/* Read IAP Serial Number Identification */
@@ -220,9 +219,6 @@ void usb_set_descriptor_by_serial_number(void)
 			usb_descriptor_string_serial_number[3 + i * 2] = 0x00;
 		}
 	} else {
-#else
-    {
-#endif
 		usb_descriptor_string_serial_number[0] = 2;
 		usb_descriptor_string_serial_number[1] = USB_DESCRIPTOR_TYPE_STRING;
 	}