--- src/sys/dev/acpica5/acpi.c	2007/01/25 02:43:35	1.29
+++ src/sys/dev/acpica5/acpi.c	2007/01/29 14:09:15	1.29.2.1
@@ -2842,7 +2842,7 @@ acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
     /* If the user is setting a string, parse it. */
     if (error == 0 && req->newptr != NULL) {
 	*dbg = 0;
-	/* XXX setenv((char *)oidp->oid_arg1, (char *)req->newptr); */
+	ksetenv(oidp->oid_arg1, req->newptr);
 	acpi_set_debugging(NULL);
     }