diff --git a/Objects/intobject.c b/Objects/intobject.c
index aba9f51..46c3a09 100644
--- a/Objects/intobject.c
+++ b/Objects/intobject.c
@@ -258,7 +258,7 @@
 static PyObject *
 int_repr(PyIntObject *v)
 {
-	char buf[20];
+	char buf[64];
 	PyOS_snprintf(buf, sizeof(buf), "%ld", v->ob_ival);
 	return PyString_FromString(buf);
 }