diff --git a/nflog.c b/nflog.c
index f11e3b0..3db6b02 100644
--- a/nflog.c
+++ b/nflog.c
@@ -58,7 +58,6 @@ static PyObject *nflog_nflog_setcb(PyObject *dummy, PyObject *args)
             PyErr_SetString(PyExc_TypeError, "parameter must be callable");
             return NULL;
         }
-        Py_XINCREF(temp);
         Py_XDECREF(nflog_py_cb);
         nflog_py_cb = temp;