diff --git a/meson.build b/meson.build
index 9bf8896..dba847b 100644
--- a/meson.build
+++ b/meson.build
@@ -932,7 +932,7 @@
   pre_args += '-D__EXTENSIONS__'
 elif host_machine.system() == 'windows'
   pre_args += [
-    '-D_WINDOWS', '-D_WIN32_WINNT=0x0601', '-DWINVER=0x0601',
+    '-D_WINDOWS', '-D_WIN32_WINNT=0x0A00', '-DWINVER=0x0A00',
     '-DPIPE_SUBSYSTEM_WINDOWS_USER',
     '-D_USE_MATH_DEFINES',  # XXX: scons doesn't use this for mingw
   ]
diff --git a/scons/gallium.py b/scons/gallium.py
index ea212d1..40903cd 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -399,8 +399,8 @@
             #'_UNICODE',
             #'UNICODE',
             # http://msdn.microsoft.com/en-us/library/aa383745.aspx
-            ('_WIN32_WINNT', '0x0601'),
-            ('WINVER', '0x0601'),
+            ('_WIN32_WINNT', '0x0A00'),
+            ('WINVER', '0x0A00'),
         ]
         if gcc_compat:
             cppdefines += [('__MSVCRT_VERSION__', '0x0700')]