diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index a598741f062..42e91e10a0d 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -7456,7 +7456,7 @@ sctp_over_udp_stop(void)
 {
 	/*
 	 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
-	 * for writting!
+	 * for writing!
 	 */
 #ifdef INET
 	if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
@@ -7485,7 +7485,7 @@ sctp_over_udp_start(void)
 #endif
 	/*
 	 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
-	 * for writting!
+	 * for writing!
 	 */
 	port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
 	if (ntohs(port) == 0) {
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index c3afb3a1567..f435ced03e0 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -719,7 +719,7 @@ tcp_over_udp_stop(void)
 {
 	/*
 	 * This function assumes sysctl caller holds inp_rinfo_lock()
-	 * for writting!
+	 * for writing!
 	 */
 #ifdef INET
 	if (V_udp4_tun_socket != NULL) {
@@ -748,7 +748,7 @@ tcp_over_udp_start(void)
 #endif
 	/*
 	 * This function assumes sysctl caller holds inp_info_rlock()
-	 * for writting!
+	 * for writing!
 	 */
 	port = V_tcp_udp_tunneling_port;
 	if (ntohs(port) == 0) {