diff --git a/profiles/osapi/modern.h b/profiles/osapi/modern.h
index 5fc8e20..bf5afae 100644
--- a/profiles/osapi/modern.h
+++ b/profiles/osapi/modern.h
@@ -307,6 +307,7 @@
 
 #define HAVE_C99_BOOL                   1
 #define HAVE_COMPUTED_GOTOS             1
+#define HAVE_USABLE_WCHAR_T             1
 #define WINDOW_HAS_FLAGS                1