diff --git a/build.cmd b/build.cmd
index 0348c73dbb..801abe4563 100644
--- a/build.cmd
+++ b/build.cmd
@@ -10,6 +10,6 @@ set GIT6=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\
 set PATH=C:\w64devkit\bin;%GIT1%;%GIT2%;%GIT3%;%GIT4%;%GIT5%;%GIT6%;%PATH%
 
 make clean
-make _WIN32_WINNT=0x0500
+make _WIN32_WINNT=0x0400
 
 pause
diff --git a/build_debug.cmd b/build_debug.cmd
index 154ceb2955..4e431458e9 100644
--- a/build_debug.cmd
+++ b/build_debug.cmd
@@ -10,6 +10,6 @@ set GIT6=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\
 set PATH=C:\w64devkit\bin;%GIT1%;%GIT2%;%GIT3%;%GIT4%;%GIT5%;%GIT6%;%PATH%
 
 make clean
-make DEBUG=1 _WIN32_WINNT=0x0500
+make DEBUG=1 _WIN32_WINNT=0x0400
 
 pause