diff --git a/sys/dev/usb/ufm.c b/sys/dev/usb/ufm.c
index b16c56f255a2..403ee052af62 100644
--- a/sys/dev/usb/ufm.c
+++ b/sys/dev/usb/ufm.c
@@ -72,8 +72,8 @@ int	ufmdebug = 100;
 #define DPRINTFN(n,x)
 #endif
 
-#if defined(__FreeBSD__) && __FreeBSD_version >= 500023
-typedef struct thread usb_proc_t;
+#ifdef __FreeBSD_version
+typedef d_thread_t usb_proc_t;
 #else
 typedef struct proc usb_proc_t;
 #endif