diff --git a/sys/net/altq/altq_rmclass.c b/sys/net/altq/altq_rmclass.c
--- a/sys/net/altq/altq_rmclass.c
+++ b/sys/net/altq/altq_rmclass.c
@@ -1449,13 +1449,8 @@
 	}
 }
 
-#if (__FreeBSD_version > 300000)
-/* hzto() is removed from FreeBSD-3.0 */
-static int hzto(struct timeval *);
-
 static int
-hzto(tv)
-	struct timeval *tv;
+hzto(struct timeval *tv)
 {
 	struct timeval t2;
 
@@ -1464,7 +1459,6 @@
 	t2.tv_usec = tv->tv_usec - t2.tv_usec;
 	return (tvtohz(&t2));
 }
-#endif /* __FreeBSD_version > 300000 */
 
 /*
  * void
diff --git a/sys/net/altq/altq_subr.c b/sys/net/altq/altq_subr.c
--- a/sys/net/altq/altq_subr.c
+++ b/sys/net/altq/altq_subr.c
@@ -81,11 +81,7 @@
 static void	tbr_timeout(void *);
 static struct mbuf *tbr_dequeue(struct ifaltq *, int);
 static int tbr_timer = 0;	/* token bucket regulator timer */
-#if !defined(__FreeBSD__) || (__FreeBSD_version < 600000)
-static struct callout tbr_callout = CALLOUT_INITIALIZER;
-#else
 static struct callout tbr_callout;
-#endif
 
 #ifdef ALTQ3_CLFIER_COMPAT
 static int 	extract_ports4(struct mbuf *, struct ip *, struct flowinfo_in *);
@@ -883,7 +879,6 @@
 extern u_int64_t cpu_tsc_freq;
 #endif
 
-#if (__FreeBSD_version >= 700035)
 /* Update TSC freq with the value indicated by the caller. */
 static void
 tsc_freq_changed(void *arg, const struct cf_level *level, int status)
@@ -892,7 +887,7 @@
 	if (status != 0)
 		return;
 
-#if (__FreeBSD_version >= 701102) && (defined(__amd64__) || defined(__i386__))
+#if defined(__amd64__) || defined(__i386__)
 	/* If TSC is P-state invariant, don't do anything. */
 	if (tsc_is_invariant)
 		return;
@@ -903,7 +898,6 @@
 }
 EVENTHANDLER_DEFINE(cpufreq_post_change, tsc_freq_changed, NULL,
     EVENTHANDLER_PRI_LAST);
-#endif /* __FreeBSD_version >= 700035 */
 
 static void
 init_machclk_setup(void)
diff --git a/sys/net/altq/altq_var.h b/sys/net/altq/altq_var.h
--- a/sys/net/altq/altq_var.h
+++ b/sys/net/altq/altq_var.h
@@ -64,25 +64,15 @@
 #endif
 #define	ACC_GET_HINDEX(handle) ((handle) >> 20)
 
-#if (__FreeBSD_version > 500000)
 #define ACC_LOCK_INIT(ac)	mtx_init(&(ac)->acc_mtx, "classifier", MTX_DEF)
 #define ACC_LOCK_DESTROY(ac)	mtx_destroy(&(ac)->acc_mtx)
 #define ACC_LOCK(ac)		mtx_lock(&(ac)->acc_mtx)
 #define ACC_UNLOCK(ac)		mtx_unlock(&(ac)->acc_mtx)
-#else
-#define ACC_LOCK_INIT(ac)
-#define ACC_LOCK_DESTROY(ac)
-#define ACC_LOCK(ac)
-#define ACC_UNLOCK(ac)
-#endif
 
 struct acc_classifier {
 	u_int32_t			acc_fbmask;
 	LIST_HEAD(filt, acc_filter)	acc_filters[ACC_FILTER_TABLESIZE];
-
-#if (__FreeBSD_version > 500000)
 	struct	mtx acc_mtx;
-#endif
 };
 
 /*