diff --git a/reg-tests/connection/tcp_md5_signature.vtc b/reg-tests/connection/tcp_md5_signature.vtc
index 8ea214b8c..383658e74 100644
--- a/reg-tests/connection/tcp_md5_signature.vtc
+++ b/reg-tests/connection/tcp_md5_signature.vtc
@@ -1,10 +1,7 @@
 varnishtest "Test the support for tcp-md5sig option (linux only)"
 
+feature cmd "$HAPROXY_PROGRAM -cc 'feature(HAVE_TCP_MD5SIG)'"
 feature ignore_unknown_macro
-feature cmd "$HAPROXY_PROGRAM -cc 'version_atleast(3.3-dev1)'"
-
-#EXCLUDE_TARGETS=solaris,freebsd,freebsd-glibc,dragonfly,openbsd,netbsd,cygwin,haiku,aix51,aix52,aix72-gcc,osx,generic,custom
-
 
 haproxy h1 -conf {
     defaults
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index b84a4c5e6..ea9f4c9fe 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -984,6 +984,14 @@ static int tcp_get_info(struct connection *conn, long long int *info, int info_n
 #endif /* TCP_INFO */
 
 
+static void __proto_tcp_init(void)
+{
+#if defined(__linux__) && !defined(TCP_MD5SIG)
+	hap_register_feature("HAVE_TCP_MD5SIG");
+#endif
+}
+INITCALL0(STG_REGISTER, __proto_tcp_init);
+
 /*
  * Local variables:
  *  c-indent-level: 8