diff --git a/src/App/PropertyLinks.cpp b/src/App/PropertyLinks.cpp
index 1ad3572c52..de95973edc 100644
--- a/src/App/PropertyLinks.cpp
+++ b/src/App/PropertyLinks.cpp
@@ -716,8 +716,10 @@ PyObject *PropertyLinkList::getPyObject(void)
 }
 
 DocumentObject *PropertyLinkList::getPyValue(PyObject *item) const {
-    if (!PyObject_TypeCheck(item, &(DocumentObjectPy::Type))) {
-        std::string error = std::string("type must be 'DocumentObject' or list of 'DocumentObject', not ");
+    if (item == Py_None) {
+        return nullptr;
+    } else if (!PyObject_TypeCheck(item, &(DocumentObjectPy::Type))) {
+        std::string error = std::string("type must be 'DocumentObject', list of 'DocumentObject', or NoneType, not ");
         error += item->ob_type->tp_name;
         throw Base::TypeError(error);
     }