1 files changed, 1 insertions, 1 deletions
diff --git a/py/misc.h b/py/misc.h
index 2ac64a7b76..c8ccdaa02e 100644
--- a/py/misc.h
+++ b/py/misc.h
@@ -100,7 +100,7 @@ bool unichar_isupper(unichar c);
 bool unichar_islower(unichar c);
 unichar unichar_tolower(unichar c);
 unichar unichar_toupper(unichar c);
-machine_uint_t unichar_charlen(const char *str, machine_uint_t len);
+mp_uint_t unichar_charlen(const char *str, mp_uint_t len);
 #define UTF8_IS_NONASCII(ch) ((ch) & 0x80)
 #define UTF8_IS_CONT(ch) (((ch) & 0xC0) == 0x80)