diff --git a/src/util/bdnet.cc b/src/util/bdnet.cc
index 495a35c..b951f0e 100644
--- a/src/util/bdnet.cc
+++ b/src/util/bdnet.cc
@@ -276,13 +276,13 @@ int bdnet_inet_aton(const char *name, struct in_addr *addr)
         return (((*addr).s_addr = inet_addr(name)) != INADDR_NONE);
 }
 
-
-
+#ifndef __MINGW64_VERSION_MAJOR
 int sleep(unsigned int sec)
 { 
 	Sleep(sec * 1000); 
 	return 0;
 }
+#endif
 
 int usleep(unsigned int usec)
 { 
diff --git a/src/util/bdnet.h b/src/util/bdnet.h
index fdc4c33..9b9d36f 100644
--- a/src/util/bdnet.h
+++ b/src/util/bdnet.h
@@ -131,9 +131,13 @@ std::string bdnet_inet_ntoa(struct in_addr in);
  */
 
 #define EAGAIN          11
+#define EUSERS          87
+
+#define EHOSTDOWN       112
+
+#ifndef __MINGW64_VERSION_MAJOR
 #define EWOULDBLOCK     EAGAIN
 
-#define EUSERS          87
 #define ENOTSOCK        88
 
 #define EOPNOTSUPP      95 
@@ -147,10 +151,10 @@ std::string bdnet_inet_ntoa(struct in_addr in);
 
 #define ETIMEDOUT       10060 // value from pthread.h
 #define ECONNREFUSED    111
-#define EHOSTDOWN       112
 #define EHOSTUNREACH    113
 #define EALREADY        114
 #define EINPROGRESS     115
+#endif
 
 int     bdnet_w2u_errno(int error);
 
@@ -158,7 +162,9 @@ int     bdnet_w2u_errno(int error);
  * ms uses millisecs.
  * void Sleep(int ms);
  */
+#ifndef __MINGW64_VERSION_MAJOR
 int sleep(unsigned int sec);
+#endif
 int usleep(unsigned int usec);
 
 #endif // END of WINDOWS defines.