diff --git a/libexec/mknetid/parse_group.c b/libexec/mknetid/parse_group.c
index b34ee11fcb39..84cb991cc6d9 100644
--- a/libexec/mknetid/parse_group.c
+++ b/libexec/mknetid/parse_group.c
@@ -126,7 +126,7 @@ grscan(int search, int gid)
 		if (_gr_group.gr_name[0] == '+')
 			continue;
 		if ((_gr_group.gr_passwd = strsep(&bp, ":\n")) == NULL)
-			break;;
+			break;
 		if (!(cp = strsep(&bp, ":\n")))
 			continue;
 		_gr_group.gr_gid = atoi(cp);
diff --git a/sys/arm/at91/at91_pmc.c b/sys/arm/at91/at91_pmc.c
index 03a7a6e8134b..bbd0ac946e0d 100644
--- a/sys/arm/at91/at91_pmc.c
+++ b/sys/arm/at91/at91_pmc.c
@@ -325,7 +325,7 @@ at91_pmc_clock_disable(struct at91_pmc_clock *clk)
 static int
 at91_pmc_pll_rate(struct at91_pmc_clock *clk, uint32_t reg)
 {
-	uint32_t mul, div, freq;;
+	uint32_t mul, div, freq;
 
 	freq = clk->parent->hz;
 	div = (reg >> clk->pll_div_shift) & clk->pll_div_mask;
diff --git a/sys/dev/bwn/if_bwn.c b/sys/dev/bwn/if_bwn.c
index 587b7347c7b4..b2f72f534a06 100644
--- a/sys/dev/bwn/if_bwn.c
+++ b/sys/dev/bwn/if_bwn.c
@@ -2882,7 +2882,7 @@ bwn_set_channel(struct ieee80211com *ic)
 
 	error = bwn_switch_band(sc, ic->ic_curchan);
 	if (error)
-		goto fail;;
+		goto fail;
 	bwn_mac_suspend(mac);
 	bwn_set_txretry(mac, BWN_RETRY_SHORT, BWN_RETRY_LONG);
 	chan = ieee80211_chan2ieee(ic, ic->ic_curchan);
@@ -8260,7 +8260,7 @@ bwn_switch_band(struct bwn_softc *sc, struct ieee80211_channel *chan)
 	device_printf(sc->sc_dev, "switching to %s-GHz band\n",
 	    IEEE80211_IS_CHAN_2GHZ(chan) ? "2" : "5");
 
-	down_dev = sc->sc_curmac;;
+	down_dev = sc->sc_curmac;
 	status = down_dev->mac_status;
 	if (status >= BWN_MAC_STATUS_STARTED)
 		bwn_core_stop(down_dev);
diff --git a/sys/dev/mps/mps.c b/sys/dev/mps/mps.c
index 1fb37e29509d..61cbaa6719a9 100644
--- a/sys/dev/mps/mps.c
+++ b/sys/dev/mps/mps.c
@@ -1282,7 +1282,7 @@ mps_dispatch_event(struct mps_softc *sc, uintptr_t data,
     MPI2_EVENT_NOTIFICATION_REPLY *reply)
 {
 	struct mps_event_handle *eh;
-	int event, handled = 0;;
+	int event, handled = 0;
 
 	event = reply->Event;
 	TAILQ_FOREACH(eh, &sc->event_list, eh_list) {
diff --git a/sys/dev/siba/siba_bwn.c b/sys/dev/siba/siba_bwn.c
index b335484d4d71..1e0ba0dfa689 100644
--- a/sys/dev/siba/siba_bwn.c
+++ b/sys/dev/siba/siba_bwn.c
@@ -326,7 +326,7 @@ static int
 siba_bwn_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	struct siba_dev_softc *sd;
-	struct siba_softc *siba;;
+	struct siba_softc *siba;
 
 	sd = device_get_ivars(child);
 	siba = sd->sd_bus;
diff --git a/sys/dev/sis/if_sisreg.h b/sys/dev/sis/if_sisreg.h
index 28d43901a23e..058d9e72a7b7 100644
--- a/sys/dev/sis/if_sisreg.h
+++ b/sys/dev/sis/if_sisreg.h
@@ -497,7 +497,7 @@ struct sis_softc {
 	int			sis_tx_prod;
 	int			sis_tx_cons;
 	int			sis_tx_cnt;
-	int			sis_rx_cons;;
+	int			sis_rx_cons;
 	bus_addr_t		sis_rx_paddr;
 	bus_addr_t		sis_tx_paddr;
 	struct callout		sis_stat_ch;
diff --git a/sys/mips/mips/mp_machdep.c b/sys/mips/mips/mp_machdep.c
index 2b993cb99370..41de5fba2272 100644
--- a/sys/mips/mips/mp_machdep.c
+++ b/sys/mips/mips/mp_machdep.c
@@ -164,7 +164,7 @@ mips_ipi_handler(void *arg)
 			break;
 		case IPI_HARDCLOCK:
 			CTR1(KTR_SMP, "%s: IPI_HARDCLOCK", __func__);
-			hardclockintr();;
+			hardclockintr();
 			break;
 		default:
 			panic("Unknown IPI 0x%0x on cpu %d", ipi, curcpu);
diff --git a/usr.sbin/ac/ac.c b/usr.sbin/ac/ac.c
index c584cd4b934d..5dc827165bd4 100644
--- a/usr.sbin/ac/ac.c
+++ b/usr.sbin/ac/ac.c
@@ -584,7 +584,7 @@ ac(const char *file)
 	if (!(Flags & AC_W))
 		usht.ut_tv.tv_sec = time(NULL);
 	else
-		usht.ut_tv.tv_sec = ut_timecopy;;
+		usht.ut_tv.tv_sec = ut_timecopy;
 	usht.ut_type = SHUTDOWN_TIME;
 
 	if (Flags & AC_D) {