diff --git a/include/meson.build b/include/meson.build
index 1fab731c3..3521fa3ef 100644
--- a/include/meson.build
+++ b/include/meson.build
@@ -245,6 +245,8 @@ conf_data.set('HAVE_LIBUNWIND', get_option('libunwind'))
 conf_data.set('HAVE_APM', (build_apm or build_acpi) ? '1' : false)
 conf_data.set('HAVE_ACPI', build_acpi ? '1' : false)
 
+conf_data.set('DDXOSVERRORF', build_xwin ? '1' : false)
+conf_data.set('DDXBEFORERESET', build_xwin ? '1' : false)
 enable_debugging = get_option('buildtype') == 'debug'
 conf_data.set('DEBUG', enable_debugging ? '1' : false)