diff --git a/src/plugins/qmldesigner/designercore/include/auxiliarydataproperties.h b/src/plugins/qmldesigner/designercore/include/auxiliarydataproperties.h
index d2d0442913e..c7193960ed7 100644
--- a/src/plugins/qmldesigner/designercore/include/auxiliarydataproperties.h
+++ b/src/plugins/qmldesigner/designercore/include/auxiliarydataproperties.h
@@ -143,6 +143,7 @@ inline constexpr AuxiliaryDataKeyView globalAnnotationStatus{AuxiliaryDataType::
                                                              "globalAnnotationStatus"};
 inline constexpr AuxiliaryDataKeyView rotBlockProperty{AuxiliaryDataType::NodeInstanceAuxiliary,
                                                        "rotBlock"};
+inline constexpr AuxiliaryDataKeyView languageProperty{AuxiliaryDataType::Temporary, "language"};
 
 template<typename Type>
 QVariant getDefaultValueAsQVariant(const Type &key)
diff --git a/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp b/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
index 871ed8e24e5..87cd27062d6 100644
--- a/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
+++ b/src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp
@@ -721,7 +721,7 @@ void NodeInstanceView::auxiliaryDataChanged(const ModelNode &node,
 
     case AuxiliaryDataType::Temporary:
         if (node.isRootNode()) {
-            if (key.name == "language") {
+            if (key == languageProperty) {
                 const QString languageAsString = value.toString();
                 if (auto multiLanguageAspect = QmlProjectManager::QmlMultiLanguageAspect::current(
                         m_currentTarget))