diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 2a070e22e7b..f500038de81 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -4982,7 +4982,7 @@ load_counted_binunicode(UnpicklerObject *self, int nbytes)
 }
 
 static int
-load_counted_tuple(UnpicklerObject *self, int len)
+load_counted_tuple(UnpicklerObject *self, Py_ssize_t len)
 {
     PyObject *tuple;