diff --git a/src/net.cpp b/src/net.cpp
index 4bd534b..09ceca8 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -16,6 +16,10 @@
 #include <string.h>
 #endif
 
+// MSG_NOSIGNAL is not available on some platforms, if it doesn't exist define it as 0
+#if !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
 
 // Dump addresses to peers.dat every 15 minutes (900s)
 #define DUMP_ADDRESSES_INTERVAL 900
diff --git a/src/netbase.cpp b/src/netbase.cpp
index 289da13..4eea5e5 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -17,6 +17,11 @@
 #endif
 #endif
 
+// MSG_NOSIGNAL is not available on some platforms, if it doesn't exist define it as 0
+#if !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
+
 #include <boost/algorithm/string/case_conv.hpp> // for to_lower()
 #include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()