diff --git a/Modules/cStringIO.c b/Modules/cStringIO.c
index 9b39703..79834f9 100644
--- a/Modules/cStringIO.c
+++ b/Modules/cStringIO.c
@@ -276,7 +276,7 @@
 
         if (!IO__opencheck(self)) return NULL;
 
-        return PyInt_FromSsize_t(self->pos);
+        return PyLong_FromSsize_t(self->pos);
 }
 
 PyDoc_STRVAR(IO_truncate__doc__,