diff --git a/pycardium/mpconfigport.h b/pycardium/mpconfigport.h
index a6aafcb868d1b01dc1bd103015e3acb413225237..a99c63acfe3d50a083b6a428e1b511d41edf13e5 100644
--- a/pycardium/mpconfigport.h
+++ b/pycardium/mpconfigport.h
@@ -20,6 +20,7 @@
 #define MICROPY_LONGINT_IMPL                (MICROPY_LONGINT_IMPL_LONGLONG)
 
 /* Builtin function and modules */
+#define MICROPY_PY_ALL_SPECIAL_METHODS      (1)
 #define MICROPY_PY_BUILTINS_HELP            (1)
 #define MICROPY_PY_BUILTINS_HELP_MODULES    (1)
 #define MICROPY_PY_UBINASCII                (1)