diff --git a/TSRM/readdir.h b/TSRM/readdir.h
index 139bc7bb702..0665810c854 100644
--- a/TSRM/readdir.h
+++ b/TSRM/readdir.h
@@ -7,8 +7,6 @@
  * on Windows 95/NT.
  */
 
-#define _WIN32_WINNT 0x0400
-
 #include <windows.h>
 
 #include <io.h>
diff --git a/TSRM/tsrm_config.w32.h b/TSRM/tsrm_config.w32.h
index 28a4e4242e0..14c6443a03d 100644
--- a/TSRM/tsrm_config.w32.h
+++ b/TSRM/tsrm_config.w32.h
@@ -1,6 +1,8 @@
 #ifndef TSRM_CONFIG_W32_H
 #define TSRM_CONFIG_W32_H
 
+#include <../main/config.w32.h>
+
 #define HAVE_UTIME 1
 #define HAVE_ALLOCA 1
 #define HAVE_REALPATH 1