diff -U0 pycups-1.9.63/ChangeLog.encoding pycups-1.9.63/ChangeLog
diff -up pycups-1.9.63/cupsconnection.c.encoding pycups-1.9.63/cupsconnection.c
--- pycups-1.9.63/cupsconnection.c.encoding	2013-04-12 11:35:20.604099365 +0100
+++ pycups-1.9.63/cupsconnection.c	2013-04-12 11:35:34.945163243 +0100
@@ -129,6 +129,9 @@ UTF8_from_PyObj (char **const utf8, PyOb
   else if (PyString_Check (obj)) {
     const char *ret;
     PyObject *unicodeobj = PyUnicode_FromEncodedObject (obj, NULL, NULL);
+    if (unicodeobj == NULL)
+      return NULL;
+
     ret = UTF8_from_PyObj (utf8, unicodeobj);
     Py_DECREF (unicodeobj);
     return ret;