diff --git a/ports/stm32/mpconfigport.h b/ports/stm32/mpconfigport.h
index 6f38d90e8..14a058989 100644
--- a/ports/stm32/mpconfigport.h
+++ b/ports/stm32/mpconfigport.h
@@ -100,6 +100,7 @@
 #define MICROPY_PY_BUILTINS_SLICE_INDICES (1)
 #define MICROPY_PY_BUILTINS_ROUND_INT (1)
 #define MICROPY_PY_ALL_SPECIAL_METHODS (1)
+#define MICROPY_PY_REVERSE_SPECIAL_METHODS (1)
 #define MICROPY_PY_BUILTINS_COMPILE (MICROPY_ENABLE_COMPILER)
 #define MICROPY_PY_BUILTINS_EXECFILE (MICROPY_ENABLE_COMPILER)
 #define MICROPY_PY_BUILTINS_NOTIMPLEMENTED (1)