diff --git a/minimal/mpconfigport.h b/minimal/mpconfigport.h
index b9c97d2d349c68544f515f9ebc42e8120c2a2450..6547b1ae1464bd663ddb7250572644957d2c9444 100644
--- a/minimal/mpconfigport.h
+++ b/minimal/mpconfigport.h
@@ -4,6 +4,7 @@
 
 #define MICROPY_QSTR_BYTES_IN_HASH  (1)
 #define MICROPY_ALLOC_PATH_MAX      (256)
+#define MICROPY_ALLOC_PARSE_CHUNK_INIT (16)
 #define MICROPY_EMIT_X64            (0)
 #define MICROPY_EMIT_THUMB          (0)
 #define MICROPY_EMIT_INLINE_THUMB   (0)