--- domoticz-2022.1/hardware/VolcraftCO20.cpp.bak	Wed Jun 15 09:19:34 2022
+++ domoticz-2022.1/hardware/VolcraftCO20.cpp	Wed Jun 15 09:20:22 2022
@@ -98,7 +98,7 @@
 		goto out;
 	}
 
-#ifndef __NetBSD__
+#if !defined(__NetBSD__) && !defined(__sun)
 	/* Ensure that the device isn't claimed.  */
 	ret = usb_get_driver_np(devh, 0 /*intrf*/, driver_name, sizeof(driver_name));
 	if (!ret)