diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 5289ea0..abcdd1e 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1136,7 +1136,7 @@
         cmp = PyObject_RichCompareBool(selfi, v, Py_EQ);
         Py_DECREF(selfi);
         if (cmp > 0) {
-            return PyLong_FromLong((long)i);
+            return PyLong_FromSsize_t(i);
         }
         else if (cmp < 0)
             return NULL;