diff --git a/py/argcheck.c b/py/argcheck.c
index ffcca4cb6..35b116ec0 100644
--- a/py/argcheck.c
+++ b/py/argcheck.c
@@ -143,6 +143,6 @@ NORETURN void mp_arg_error_terse_mismatch(void) {
 
 #if MICROPY_CPYTHON_COMPAT
 NORETURN void mp_arg_error_unimpl_kw(void) {
-    mp_raise_NotImplementedError(MP_ERROR_TEXT("keyword argument(s) not yet implemented - use normal args instead"));
+    mp_raise_NotImplementedError(MP_ERROR_TEXT("keyword argument(s) not implemented - use normal args instead"));
 }
 #endif
diff --git a/py/objstr.c b/py/objstr.c
index bd3e16e7f..4d9dca04a 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -1118,7 +1118,7 @@ STATIC vstr_t mp_obj_str_format_helper(const char *str, const char *top, int *ar
                 arg = key_elem->value;
             }
             if (field_name < field_name_top) {
-                mp_raise_NotImplementedError(MP_ERROR_TEXT("attributes not supported yet"));
+                mp_raise_NotImplementedError(MP_ERROR_TEXT("attributes not supported"));
             }
         } else {
             if (*arg_i < 0) {