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-rw-r--r--Modules/pyexpat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index c965ff4..4b9687a 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1035,7 +1035,7 @@ xmlparse_UseForeignDTD(xmlparseobject *self, PyObject *args)
PyObject *flagobj = NULL;
int flag = 1;
enum XML_Error rc;
- if (!PyArg_ParseTuple(args, "O:UseForeignDTD", &flagobj))
+ if (!PyArg_ParseTuple(args, "|O:UseForeignDTD", &flagobj))
return NULL;
if (flagobj != NULL) {
flag = PyObject_IsTrue(flagobj);