diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index 570c5012ed8..6bc7676973c 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -8688,6 +8688,7 @@ static PyObject *pyrna_register_class(PyObject *UNUSED(self), PyObject *py_class
   switch (_PyObject_LookupAttr(py_class, bpy_intern_str_register, &py_cls_meth)) {
     case 1: {
       PyObject *ret = PyObject_CallObject(py_cls_meth, NULL);
+      Py_DECREF(py_cls_meth);
       if (ret) {
         Py_DECREF(ret);
       }
@@ -8794,6 +8795,7 @@ static PyObject *pyrna_unregister_class(PyObject *UNUSED(self), PyObject *py_cla
   switch (_PyObject_LookupAttr(py_class, bpy_intern_str_unregister, &py_cls_meth)) {
     case 1: {
       PyObject *ret = PyObject_CallObject(py_cls_meth, NULL);
+      Py_DECREF(py_cls_meth);
       if (ret) {
         Py_DECREF(ret);
       }