diff --git a/apriltag_pywrap.c b/apriltag_pywrap.c
index e7f028db..023a7bda 100644
--- a/apriltag_pywrap.c
+++ b/apriltag_pywrap.c
@@ -371,12 +371,16 @@ static struct PyModuleDef module_def =
 
 PyMODINIT_FUNC PyInit_apriltag(void)
 {
-    if (PyType_Ready(&apriltagType) < 0)
+    if (PyType_Ready(&apriltagType) < 0) {
+        printf("PyType_Ready error!\n"); fflush(stdout);
         return NULL;
+    }
 
     PyObject* module =
         PyModule_Create(&module_def);
 
+    // printf("NULL: %d\n", *(int*)NULL);
+
     Py_INCREF(&apriltagType);
     PyModule_AddObject(module, "apriltag", (PyObject *)&apriltagType);