diff -up PyPAM-0.5.0/PAMmodule.c.dealloc PyPAM-0.5.0/PAMmodule.c

--- PyPAM-0.5.0/PAMmodule.c.dealloc	2011-01-17 22:48:22.000000000 +0100

+++ PyPAM-0.5.0/PAMmodule.c	2011-01-18 21:24:59.000000000 +0100

@@ -538,10 +538,11 @@ static void PyPAM_dealloc(PyPAMObject *s

     free(self->service);

     free(self->user);

     free(self->conv);

-    pam_end(self->pamh, PAM_SUCCESS);

+    if (self->pamh)

+        pam_end(self->pamh, PAM_SUCCESS);

     dlclose(self->dlh2);

     dlclose(self->dlh1);

-    PyMem_DEL(self);

+    PyObject_Del(self);

 }

 static PyObject * PyPAM_getattr(PyPAMObject *self, char *name)