diff --git a/src/App/Document.cpp b/src/App/Document.cpp
index b28794797529..1a8325de2d51 100644
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -495,7 +495,7 @@ void Document::exportGraphviz(std::ostream& out) const
                 }
                 if(!sgraph) {
                     if(docObj->isDerivedFrom(OriginFeature::getClassTypeId()))
-                        sgraph = GraphList[dynamic_cast<OriginFeature*>(docObj)->getOrigin()];
+                        sgraph = GraphList[static_cast<OriginFeature*>(docObj)->getOrigin()];
                 }
             }
             if(!sgraph)
@@ -2987,15 +2987,15 @@ void Document::getLinksTo(std::set<DocumentObject*> &links,
     std::map<const App::DocumentObject*, std::vector<App::DocumentObject*> > linkMap;
 
     for(auto o : !objs.empty()?objs:d->objectArray) {
-        if (o == obj) continue;
+        if(o == obj) continue;
         auto linked = o;
-        if (options & GetLinkArrayElement) {
-            linked = o->getLinkedObject(true, nullptr, Prop_Output | Prop_Hidden, 0);
+        if(options & GetLinkArrayElement) {
+            linked = o->getLinkedObject(false);
         } else {
             auto ext = o->getExtensionByType<LinkBaseExtension>(true);
             linked = ext
                 ? ext->getTrueLinkedObject(false, nullptr, 0, true)
-                : o->getLinkedObject(false, nullptr, false, 0);
+                : o->getLinkedObject(false);
         }
         if(linked && linked!=o) {
             if(options & GetLinkRecursive)
diff --git a/src/App/DocumentObjectPyImp.cpp b/src/App/DocumentObjectPyImp.cpp
index 0e4c1b9430fa..14206f36d93d 100644
--- a/src/App/DocumentObjectPyImp.cpp
+++ b/src/App/DocumentObjectPyImp.cpp
@@ -718,7 +718,7 @@ PyObject*  DocumentObjectPy::getPathsByOutList(PyObject *args)
     }
 }
 
-PyObject *DocumentObjectPy::getCustomAttributes(const char* attr)
+PyObject *DocumentObjectPy::getCustomAttributes(const char* attr) const
 {
     // Dynamic property is now directly supported in PropertyContainer. So we
     // can comment out here and let PropertyContainerPy handle it.
@@ -886,6 +886,6 @@ Py::Boolean DocumentObjectPy::getNoTouch() const {
     return Py::Boolean(getDocumentObjectPtr()->testStatus(ObjectStatus::NoTouch));
 }
 
-void DocumentObjectPy::setNoTouch(const Py::Boolean& value) {
+void DocumentObjectPy::setNoTouch(Py::Boolean value) {
     getDocumentObjectPtr()->setStatus(ObjectStatus::NoTouch,value.isTrue());
 }