Index: src/OFTCPSocket.m
==================================================================
--- src/OFTCPSocket.m
+++ src/OFTCPSocket.m
@@ -195,11 +195,11 @@
 		    address->family == OFSocketAddressFamilyIPv4)
 			_flags |= flagMapIPv4;
 		else
 			_flags &= ~flagMapIPv4;
 	}
-#elif defined(OF_MACOS) || defined(OF_IOS)
+#elif (defined(OF_MACOS) || defined(OF_IOS)) && defined(SAE_ASSOCID_ANY)
 	if (_flags & flagUseMPTCP) {
 		_socket = socket(AF_MULTIPATH, SOCK_STREAM | SOCK_CLOEXEC,
 		    IPPROTO_TCP);
 
 		if (_socket != OFInvalidSocketHandle)
@@ -246,11 +246,11 @@
 		mappedIPv4 = mapIPv4(address);
 		address = &mappedIPv4;
 	}
 #endif
 
-#if defined(OF_MACOS) || defined(OF_IOS)
+#if (defined(OF_MACOS) || defined(OF_IOS)) && defined(SAE_ASSOCID_ANY)
 	if (_flags & flagUseConnectX) {
 		sa_endpoints_t endpoints = {
 			.sae_dstaddr = (struct sockaddr *)&address->sockaddr,
 			.sae_dstaddrlen = address->length
 		};