diff --git a/src/common.h b/src/common.h
index 69560d22..2da9df8b 100644
--- a/src/common.h
+++ b/src/common.h
@@ -35,7 +35,7 @@
 #define MSG_FASTOPEN   0x20000000
 #endif
 
-#else
+#elif !defined(__APPLE__)
 
 #ifdef TCP_FASTOPEN
 #undef TCP_FASTOPEN