py: mp_builtin___import__(): Add const to arg type.
diff --git a/py/builtinimport.c b/py/builtinimport.c
index 1272d59..0eaa250 100644
--- a/py/builtinimport.c
+++ b/py/builtinimport.c
@@ -122,7 +122,7 @@
     mp_parse_compile_execute(lex, MP_PARSE_FILE_INPUT, mod_globals, mod_globals);
 }
 
-mp_obj_t mp_builtin___import__(mp_uint_t n_args, mp_obj_t *args) {
+mp_obj_t mp_builtin___import__(mp_uint_t n_args, const mp_obj_t *args) {
 #if DEBUG_PRINT
     DEBUG_printf("__import__:\n");
     for (mp_uint_t i = 0; i < n_args; i++) {