diff --git a/src/MultiPlayer/mpplayer.cxx b/src/MultiPlayer/mpplayer.cxx
index d40abec46..adfe19e52 100644
--- a/src/MultiPlayer/mpplayer.cxx
+++ b/src/MultiPlayer/mpplayer.cxx
@@ -20,6 +20,11 @@
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 //
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef FG_MPLAYER_AS
 
 /******************************************************************
 * $Id$
@@ -38,7 +43,7 @@
 #include "mpplayer.hxx"
 
 #include <stdlib.h>
-#ifndef _MSC_VER
+#if !(defined(_MSC_VER) || defined(__MINGW32__))
 # include <netdb.h>
 # include <sys/socket.h>
 # include <netinet/in.h>
@@ -307,3 +312,5 @@ void MPPlayer::FillMsgHdr(T_MsgHdr *MsgHdr, const int iMsgId) {
 
 }
 
+#endif // FG_MPLAYER_AS
+
diff --git a/src/MultiPlayer/multiplayrxmgr.cxx b/src/MultiPlayer/multiplayrxmgr.cxx
index 00322bdb2..33f5f1aa6 100644
--- a/src/MultiPlayer/multiplayrxmgr.cxx
+++ b/src/MultiPlayer/multiplayrxmgr.cxx
@@ -21,6 +21,11 @@
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 //
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef FG_MPLAYER_AS
 
 /******************************************************************
 * $Id$
@@ -51,7 +56,7 @@
 ******************************************************************/
 
 #include <sys/types.h>
-#ifndef _MSC_VER
+#if !(defined(_MSC_VER) || defined(__MINGW32__))
 # include <sys/socket.h>
 # include <netinet/in.h>
 # include <arpa/inet.h>
@@ -353,4 +358,5 @@ void FGMultiplayRxMgr::Update(void) {
 
 }
 
+#endif // FG_MPLAYER_AS
 
diff --git a/src/MultiPlayer/multiplaytxmgr.cxx b/src/MultiPlayer/multiplaytxmgr.cxx
index 9373a09bb..4ec000602 100644
--- a/src/MultiPlayer/multiplaytxmgr.cxx
+++ b/src/MultiPlayer/multiplaytxmgr.cxx
@@ -21,6 +21,12 @@
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 //
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef FG_MPLAYER_AS
+
 /******************************************************************
 * $Id$
 *
@@ -31,7 +37,7 @@
 ******************************************************************/
 
 #include <sys/types.h>
-#ifndef _MSC_VER
+#if !(defined(_MSC_VER) || defined(__MINGW32__))
 # include <sys/socket.h>
 # include <netinet/in.h>
 # include <arpa/inet.h>
@@ -235,3 +241,5 @@ void FGMultiplayTxMgr::SendTextMessage(const string &sMsgText) const {
 
 }
 
+#endif // FG_MPLAYER_AS
+