diff --git a/gtests/net/packetdrill/symbols_freebsd.c b/gtests/net/packetdrill/symbols_freebsd.c
index 0ead268b47dac3f622cf4c8fea22a80c8c8e0a92..210b9ddeceb5e06db5d73169f97094770a42412f 100644
--- a/gtests/net/packetdrill/symbols_freebsd.c
+++ b/gtests/net/packetdrill/symbols_freebsd.c
@@ -371,6 +371,9 @@ struct int_symbol platform_symbols_table[] = {
 	{ TCP_CONGESTION,                   "TCP_CONGESTION"                  },
 #if defined(TCP_CCALGOOPT)
 	{ TCP_CCALGOOPT,                    "TCP_CCALGOOPT"                   },
+#endif
+#if defined(TCP_MAXUNACKTIME)
+	{ TCP_MAXUNACKTIME,                 "TCP_MAXUNACKTIME"                },
 #endif
 	{ TCP_KEEPINIT,                     "TCP_KEEPINIT"                    },
 	{ TCP_KEEPIDLE,                     "TCP_KEEPIDLE"                    },