diff --git a/src/net.cpp b/src/net.cpp
index 92ccb1e8806..5135a88b32d 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -12,6 +12,8 @@
 
 #ifdef __WXMSW__
 #include <string.h>
+#else
+#include <netinet/in.h>
 #endif
 
 #ifdef USE_UPNP
diff --git a/src/protocol.cpp b/src/protocol.cpp
index a3e54ebc3de..7d80d5d5d0d 100644
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -8,6 +8,7 @@
 
 #ifndef __WXMSW__
 # include <arpa/inet.h>
+# include <netinet/in.h>
 #endif
 
 // Prototypes from net.h, but that header (currently) stinks, can't #include it without breaking things
diff --git a/src/protocol.h b/src/protocol.h
index 53d3eef4d57..6db64900f23 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -10,6 +10,10 @@
 #ifndef __INCLUDED_PROTOCOL_H__
 #define __INCLUDED_PROTOCOL_H__
 
+#ifndef __WXMSW__
+#include <netinet/in.h>
+#endif
+
 #include "serialize.h"
 #include <string>
 #include "uint256.h"