diff --git a/dlls/winhttp/winhttp_private.h b/dlls/winhttp/winhttp_private.h
index b564d4ff266..50432351277 100644
--- a/dlls/winhttp/winhttp_private.h
+++ b/dlls/winhttp/winhttp_private.h
@@ -34,9 +34,6 @@
 #endif
 #if defined(__MINGW32__) || defined (_MSC_VER)
 # include <ws2tcpip.h>
-# ifndef MSG_WAITALL
-#  define MSG_WAITALL 0
-# endif
 #else
 # define closesocket close
 # define ioctlsocket ioctl
diff --git a/dlls/wininet/internet.h b/dlls/wininet/internet.h
index d8da781836b..8de85ff5f24 100644
--- a/dlls/wininet/internet.h
+++ b/dlls/wininet/internet.h
@@ -42,11 +42,7 @@
 # include <sys/socket.h>
 #endif
 
-#if defined(__MINGW32__) || defined (_MSC_VER)
-#ifndef MSG_WAITALL
-#define MSG_WAITALL 0
-#endif
-#else
+#if !defined(__MINGW32__) && !defined(_MSC_VER)
 #define closesocket close
 #define ioctlsocket ioctl
 #endif /* __MINGW32__ */