diff --git a/reactos/include/reactos/wine/config.h b/reactos/include/reactos/wine/config.h
index 978dbd5bb24..d90ea50eb91 100644
--- a/reactos/include/reactos/wine/config.h
+++ b/reactos/include/reactos/wine/config.h
@@ -441,7 +441,9 @@
 #define HAVE_PCLOSE 1
 
 /* Define to 1 if the system has the type `pid_t'. */
+#if !defined(_MSC_VER)
 #define HAVE_PID_T 1
+#endif
 
 /* Define to 1 if you have the <poll.h> header file. */
 /* #undef HAVE_POLL_H */