diff --git a/unix/mpconfigport_minimal.h b/unix/mpconfigport_minimal.h
index 2ab95c67af..054e82c243 100644
--- a/unix/mpconfigport_minimal.h
+++ b/unix/mpconfigport_minimal.h
@@ -34,6 +34,7 @@
 #define MICROPY_ALLOC_PARSE_CHUNK_INIT (64)
 #define MICROPY_ALLOC_PATH_MAX      (PATH_MAX)
 #define MICROPY_ENABLE_GC           (1)
+#define MICROPY_GC_ALLOC_THRESHOLD  (0)
 #define MICROPY_ENABLE_FINALISER    (0)
 #define MICROPY_STACK_CHECK         (0)
 #define MICROPY_COMP_CONST          (0)