diff --git a/src/iperf3.1 b/src/iperf3.1
index 588ef3b..5cf92b8 100644
--- a/src/iperf3.1
+++ b/src/iperf3.1
@@ -149,8 +149,11 @@ period.
 .BR -T ", " --title " \fIstr\fR"
 Prefix every output line with this string.
 .TP
-.BR -C ", " --linux-congestion " \fIalgo\fR"
-Set the congestion control algorithm (linux only).
+.BR -C ", " --congestion " \fIalgo\fR"
+Set the congestion control algorithm (Linux and FreeBSD only).  An
+older
+.B --linux-congestion
+synonym for this flag is accepted but is deprecated.
 
 .SH AUTHORS
 Iperf was originally written by Mark Gates and Alex Warshavsky.
diff --git a/src/iperf_api.c b/src/iperf_api.c
index dc62ff7..e6bc671 100644
--- a/src/iperf_api.c
+++ b/src/iperf_api.c
@@ -574,6 +574,7 @@ iperf_parse_arguments(struct iperf_test *test, int argc, char **argv)
 #endif /* HAVE_CPU_AFFINITY */
         {"title", required_argument, NULL, 'T'},
 #if defined(HAVE_TCP_CONGESTION)
+        {"congestion", required_argument, NULL, 'C'},
         {"linux-congestion", required_argument, NULL, 'C'},
 #endif /* HAVE_TCP_CONGESTION */
 #if defined(HAVE_SCTP)
diff --git a/src/locale.c b/src/locale.c
index adc0d16..164400d 100644
--- a/src/locale.c
+++ b/src/locale.c
@@ -106,7 +106,7 @@ const char usage_longstr[] = "Usage: iperf [-s|-c host] [options]\n"
                            "  -w, --window    #[KMG]    TCP window size (socket buffer size)\n"
                            "  -B, --bind      <host>    bind to a specific interface\n"
 #if defined(HAVE_TCP_CONGESTION)
-                           "  -C, --linux-congestion <algo>  set TCP congestion control algorithm (Linux only)\n"
+                           "  -C, --congestion <algo>   set TCP congestion control algorithm (Linux and FreeBSD only)\n"
 #endif /* HAVE_TCP_CONGESTION */
                            "  -M, --set-mss   #         set TCP maximum segment size (MTU - 40 bytes)\n"
                            "  -N, --nodelay             set TCP no delay, disabling Nagle's Algorithm\n"