diff --git a/smartmontools/os_freebsd.cpp b/smartmontools/os_freebsd.cpp
index 86652772c99eb71ff380f1a12ed7d92e2a80317d..d4e9964ca3691fea7ba69fa63d3e8a4fffc210b4 100644
--- a/smartmontools/os_freebsd.cpp
+++ b/smartmontools/os_freebsd.cpp
@@ -635,7 +635,7 @@ int freebsd_ata_device::do_cmd(struct freebsd_dev_channel* con, struct ata_ioc_r
   return ioctl(con->device, IOCATAREQUEST, request);
 }
 
-#if __FreeBSD_version > 800100
+#if FREEBSDVER > 800100
 class freebsd_atacam_device : public freebsd_ata_device
 {
 public: