diff --git a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.cpp b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.cpp
index 2d23871f0bf..f91bcef9968 100644
--- a/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.cpp
+++ b/src/libs/modelinglib/qmt/diagram_widgets_ui/diagramview.cpp
@@ -80,7 +80,8 @@ void DiagramView::dragEnterEvent(QDragEnterEvent *event)
             QString key;
             dataStream >> key;
             if (!key.isEmpty()) {
-                if (m_diagramSceneModel->diagramSceneController()->isAddingAllowed(Uid(key), m_diagramSceneModel->diagram()))
+                if (m_diagramSceneModel->diagramSceneController()
+                        ->isAddingAllowed(Uid(QUuid(key)), m_diagramSceneModel->diagram()))
                     accept = true;
             }
         }
@@ -122,8 +123,10 @@ void DiagramView::dropEvent(QDropEvent *event)
             QString key;
             dataStream >> key;
             if (!key.isEmpty()) {
-                if (diagramSceneController->isAddingAllowed(Uid(key), m_diagramSceneModel->diagram())) {
-                    diagramSceneController->addExistingModelElement(Uid(key), mapToScene(event->pos()),
+                if (diagramSceneController->isAddingAllowed(Uid(QUuid(key)),
+                                                            m_diagramSceneModel->diagram())) {
+                    diagramSceneController->addExistingModelElement(Uid(QUuid(key)),
+                                                                    mapToScene(event->pos()),
                                                                     m_diagramSceneModel->diagram());
                 }
             }
diff --git a/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.cpp b/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.cpp
index b3cfc13a0b0..5ad40944f67 100644
--- a/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.cpp
+++ b/src/libs/modelinglib/qmt/model_widgets_ui/modeltreeview.cpp
@@ -207,7 +207,8 @@ void ModelTreeView::dropEvent(QDropEvent *event)
                     QString key;
                     dataStream >> key;
                     if (!key.isEmpty()) {
-                        MElement *modelElement = treeModel->modelController()->findElement(Uid(key));
+                        MElement *modelElement = treeModel->modelController()->findElement(
+                            Uid(QUuid(key)));
                         if (modelElement) {
                             if (auto modelObject = dynamic_cast<MObject*>(modelElement)) {
                                 if (auto targetModelPackage = dynamic_cast<MPackage *>(targetModelObject)) {
diff --git a/src/libs/modelinglib/qstringparser/qstringparser.cpp b/src/libs/modelinglib/qstringparser/qstringparser.cpp
index bc9348394b8..cf40a46e619 100644
--- a/src/libs/modelinglib/qstringparser/qstringparser.cpp
+++ b/src/libs/modelinglib/qstringparser/qstringparser.cpp
@@ -124,7 +124,7 @@ bool QStringParser::Parser::scan(double *d, int *index)
             ++(*index);
     }
     bool ok = false;
-    *d = m_source.midRef(startIndex, *index - startIndex).toDouble(&ok);
+    *d = m_source.mid(startIndex, *index - startIndex).toDouble(&ok);
     return ok;
 }