diff --git a/sys/dev/cx/cxddk.c b/sys/dev/cx/cxddk.c
index a321000f390f..60944c911aa2 100644
--- a/sys/dev/cx/cxddk.c
+++ b/sys/dev/cx/cxddk.c
@@ -215,7 +215,7 @@ void cx_enable_receive (cx_chan_t *c, int on)
 }
 
 /*
- * Turn the transmiter on/off.
+ * Turn the transmitter on/off.
  */
 void cx_enable_transmit (cx_chan_t *c, int on)
 {
diff --git a/sys/i386/include/cserial.h b/sys/i386/include/cserial.h
index 314e9f647d43..833976a30a16 100644
--- a/sys/i386/include/cserial.h
+++ b/sys/i386/include/cserial.h
@@ -89,7 +89,7 @@ struct e3_statistics {
 #define ER_SCC_FRAMING	7		/* subchannel framing error */
 #define ER_SCC_OVERFLOW	8		/* subchannel receive buffer overflow */
 #define ER_SCC_OVERRUN	9		/* subchannel receiver overrun */
-#define ER_SCC_UNDERRUN	10		/* subchannel transmiter underrun */
+#define ER_SCC_UNDERRUN	10		/* subchannel transmitter underrun */
 #define ER_BUS		11		/* system bus is too busy (e.g PCI) */
 
 /*
diff --git a/sys/net80211/ieee80211_hwmp.c b/sys/net80211/ieee80211_hwmp.c
index cdfae74660ad..e2cd800e7bca 100644
--- a/sys/net80211/ieee80211_hwmp.c
+++ b/sys/net80211/ieee80211_hwmp.c
@@ -920,7 +920,7 @@ hwmp_update_transmitter(struct ieee80211vap *vap, struct ieee80211_node *ni,
 	    rttran->rt_metric > metric)
 	{
 		IEEE80211_NOTE(vap, IEEE80211_MSG_HWMP, ni,
-		    "%s path to transmiter %6D of %s, metric %d:%d",
+		    "%s path to transmitter %6D of %s, metric %d:%d",
 		    rttran->rt_flags & IEEE80211_MESHRT_FLAGS_VALID ?
 		    "prefer" : "update", ni->ni_macaddr, ":", hwmp_frame,
 		    rttran->rt_metric, metric);
diff --git a/sys/netinet/sctp_indata.c b/sys/netinet/sctp_indata.c
index 3f01ac523416..fc549a442929 100644
--- a/sys/netinet/sctp_indata.c
+++ b/sys/netinet/sctp_indata.c
@@ -3078,7 +3078,7 @@ sctp_process_segment_range(struct sctp_tcb *stcb, struct sctp_tmit_chunk **p_tp1
 						tp1->whoTo->net_ack += tp1->send_size;
 						if (tp1->snd_count < 2) {
 							/*-
-							 * True non-retransmited chunk
+							 * True non-retransmitted chunk
 							 */
 							tp1->whoTo->net_ack2 += tp1->send_size;
 
@@ -4056,7 +4056,7 @@ sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
 					tp1->whoTo->net_ack += tp1->send_size;
 					if (tp1->snd_count < 2) {
 						/*
-						 * True non-retransmited
+						 * True non-retransmitted
 						 * chunk
 						 */
 						tp1->whoTo->net_ack2 +=
@@ -4676,7 +4676,7 @@ sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
 
 					if (tp1->snd_count < 2) {
 						/*
-						 * True non-retransmited
+						 * True non-retransmitted
 						 * chunk
 						 */
 						tp1->whoTo->net_ack2 +=