diff --git a/python/libvirt-override.c b/python/libvirt-override.c
index c51dd3fac964e59cebff5d170e7a9bd849c9959d..768144a009690fdbf9e60dd58b53c88f8f341fa3 100644
--- a/python/libvirt-override.c
+++ b/python/libvirt-override.c
@@ -1776,8 +1776,10 @@ static int virConnectCredCallbackWrapper(virConnectCredentialPtr cred,
 
     PyErr_Clear();
     pyret = PyEval_CallObject(pycb, list);
-    if (PyErr_Occurred())
+    if (PyErr_Occurred()) {
+        PyErr_Print();
         goto cleanup;
+    }
 
     ret = PyLong_AsLong(pyret);
     if (ret == 0) {