diff --git a/windows/mpconfigport.h b/windows/mpconfigport.h
index 0a1e313cb8..974c454d39 100644
--- a/windows/mpconfigport.h
+++ b/windows/mpconfigport.h
@@ -41,6 +41,8 @@
 #define MICROPY_ENABLE_LEXER_UNIX   (1)
 #define MICROPY_ENABLE_MOD_CMATH    (1)
 #define MICROPY_MOD_SYS_STDFILES    (1)
+#define MICROPY_MOD_SYS_EXIT        (1)
+#define MICROPY_ENABLE_FROZENSET    (1)
 #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_DOUBLE)
 #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
 #define MICROPY_PORT_INIT_FUNC      init()