diff --git a/meson.build b/meson.build
index 043d9809e..29d449597 100644
--- a/meson.build
+++ b/meson.build
@@ -42,7 +42,7 @@ dataroot = datadir / 'aegisub'
 add_project_arguments('-DP_DATA="@0@"'.format(dataroot), language: 'cpp')
 
 if host_machine.system() == 'windows'
-    add_project_arguments('-DNOMINMAX', '-D_WIN32_WINNT=0x0602', language: 'cpp')
+    add_project_arguments('-DNOMINMAX', '-D_WIN32_WINNT=0x0601', language: 'cpp')
 endif
 
 # MSVC sets this automatically with -MDd, but it has a different meaning on other platforms