implemented dict.pop
diff --git a/py/map.h b/py/map.h
index b4592c2..f0a5775 100644
--- a/py/map.h
+++ b/py/map.h
@@ -26,7 +26,7 @@
int get_doubling_prime_greater_or_equal_to(int x);
void mp_map_init(mp_map_t *map, mp_map_kind_t kind, int n);
mp_map_t *mp_map_new(mp_map_kind_t kind, int n);
-mp_map_elem_t* mp_map_lookup_helper(mp_map_t *map, mp_obj_t index, bool add_if_not_found);
+mp_map_elem_t* mp_map_lookup_helper(mp_map_t *map, mp_obj_t index, bool add_if_not_found, bool remove_if_found);
mp_map_elem_t* mp_qstr_map_lookup(mp_map_t *map, qstr index, bool add_if_not_found);
void mp_map_clear(mp_map_t *map);