diff --git a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
index 34ca7fa672c..98015f81715 100644
--- a/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
+++ b/src/libs/qmljs/qmljsmodelmanagerinterface.cpp
@@ -1379,6 +1379,19 @@ void ModelManagerInterface::joinAllThreads()
         future.waitForFinished();
 }
 
+Document::Ptr ModelManagerInterface::ensuredGetDocumentForPath(const QString &filePath)
+{
+    QmlJS::Document::Ptr document = newestSnapshot().document(filePath);
+    if (!document) {
+        document = QmlJS::Document::create(filePath, QmlJS::Language::Qml);
+        QMutexLocker lock(&m_mutex);
+
+        m_newestSnapshot.insert(document);
+    }
+
+    return document;
+}
+
 void ModelManagerInterface::resetCodeModel()
 {
     QStringList documents;
diff --git a/src/libs/qmljs/qmljsmodelmanagerinterface.h b/src/libs/qmljs/qmljsmodelmanagerinterface.h
index 425f7bc2eb1..6e53c21746f 100644
--- a/src/libs/qmljs/qmljsmodelmanagerinterface.h
+++ b/src/libs/qmljs/qmljsmodelmanagerinterface.h
@@ -199,6 +199,9 @@ public:
 
     // Blocks until all parsing threads are done. Used for testing.
     void joinAllThreads();
+
+    QmlJS::Document::Ptr ensuredGetDocumentForPath(const QString &filePath);
+
 public slots:
     virtual void resetCodeModel();
     void removeProjectInfo(ProjectExplorer::Project *project);
diff --git a/src/plugins/qmldesigner/qmldesignerplugin.cpp b/src/plugins/qmldesigner/qmldesignerplugin.cpp
index 447746f26a0..a251f9c6f21 100644
--- a/src/plugins/qmldesigner/qmldesignerplugin.cpp
+++ b/src/plugins/qmldesigner/qmldesignerplugin.cpp
@@ -347,22 +347,12 @@ void QmlDesignerPlugin::resetModelSelection()
         currentDesignDocument()->rewriterView()->setSelectedModelNodes(QList<ModelNode>());
 }
 
-static  QmlJS::Document::Ptr documentForFilePath(const QString &filePath)
-{
-    QmlJS::Document::Ptr document = QmlJS::ModelManagerInterface::instance()->snapshot().document(filePath);
-    if (!document) {
-        document = QmlJS::Document::create(filePath, QmlJS::Language::Qml);
-        QmlJS::ModelManagerInterface::instance()->snapshot().insert(document);
-    }
-
-    return document;
-}
-
 static bool checkIfEditorIsQtQuick(Core::IEditor *editor)
 {
     if (editor)
     if (editor && editor->document()->id() == QmlJSEditor::Constants::C_QMLJSEDITOR_ID) {
-        QmlJS::Document::Ptr document = documentForFilePath(editor->document()->filePath());
+        QmlJS::ModelManagerInterface *modelManager = QmlJS::ModelManagerInterface::instance();
+        QmlJS::Document::Ptr document = modelManager->ensuredGetDocumentForPath(editor->document()->filePath());
         if (!document.isNull())
             return document->language() == QmlJS::Language::QmlQtQuick1
                     || document->language() == QmlJS::Language::QmlQtQuick2