diff --git a/Makefile b/Makefile
index 4d6ab1ace..0ce4b3253 100644
--- a/Makefile
+++ b/Makefile
@@ -307,7 +307,6 @@ ifeq ($(TARGET),osx)
   USE_POLL       = implicit
   USE_KQUEUE     = implicit
   USE_TPROXY     = implicit
-  USE_LIBCRYPT   = implicit
 else
 ifeq ($(TARGET),openbsd)
   # This is for OpenBSD >= 3.0
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 9c5ea98b7..b614e6b59 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -205,7 +205,7 @@ int tcp_bind_socket(int fd, int flags, struct sockaddr_storage *local, struct so
 	case AF_INET6:
 		if (flags && ip6_transp_working) {
 			if (0
-#if defined(IPV6_TRANSPARENT)
+#if defined(IPV6_TRANSPARENT) && defined(SOL_IPV6)
 			    || (setsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &one, sizeof(one)) == 0)
 #endif
 #if defined(IP_FREEBIND)
@@ -853,7 +853,7 @@ int tcp_bind_listener(struct listener *listener, char *errmsg, int errlen)
 		break;
 		case AF_INET6:
 			if (1
-#if defined(IPV6_TRANSPARENT)
+#if defined(IPV6_TRANSPARENT) && defined(SOL_IPV6)
 			    && (setsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &one, sizeof(one)) == -1)
 #endif
 #if defined(IP_FREEBIND)