diff --git a/minimal/mpconfigport.h b/minimal/mpconfigport.h
index 49f380ea09..f2c616732a 100644
--- a/minimal/mpconfigport.h
+++ b/minimal/mpconfigport.h
@@ -2,6 +2,7 @@
 
 // options to control how Micro Python is built
 
+#define MICROPY_QSTR_BYTES_IN_HASH  (1)
 #define MICROPY_ALLOC_PATH_MAX      (256)
 #define MICROPY_EMIT_X64            (0)
 #define MICROPY_EMIT_THUMB          (0)