diff --git a/src/plugins/qmldesigner/components/toolbar/toolbarbackend.cpp b/src/plugins/qmldesigner/components/toolbar/toolbarbackend.cpp
index adeb9528e31..2405314dfb4 100644
--- a/src/plugins/qmldesigner/components/toolbar/toolbarbackend.cpp
+++ b/src/plugins/qmldesigner/components/toolbar/toolbarbackend.cpp
@@ -393,13 +393,16 @@ ToolBarBackend::ToolBarBackend(QObject *parent)
             &ToolBarBackend::documentIndexChanged);
 
     connect(Core::EditorManager::instance(), &Core::EditorManager::currentEditorChanged, this, [this] {
-        static QMetaObject::Connection lastConnection;
-        disconnect(lastConnection);
+        disconnect(m_documentConnection);
 
         if (auto textDocument = qobject_cast<TextEditor::TextDocument *>(
                 Core::EditorManager::currentDocument())) {
-            lastConnection = connect(textDocument->document(), &QTextDocument::modificationChanged,
-                    this, &ToolBarBackend::isDocumentDirtyChanged);
+            m_documentConnection = connect(textDocument->document(),
+                                           &QTextDocument::modificationChanged,
+                                           this,
+
+                                           &ToolBarBackend::isDocumentDirtyChanged);
+
             emit isDocumentDirtyChanged();
         }
     });
diff --git a/src/plugins/qmldesigner/components/toolbar/toolbarbackend.h b/src/plugins/qmldesigner/components/toolbar/toolbarbackend.h
index a1b28f88f32..a41d5d23aa9 100644
--- a/src/plugins/qmldesigner/components/toolbar/toolbarbackend.h
+++ b/src/plugins/qmldesigner/components/toolbar/toolbarbackend.h
@@ -235,6 +235,7 @@ private:
 
     QStringList m_openDocuments;
     QMetaObject::Connection m_kitConnection;
+    QMetaObject::Connection m_documentConnection;
 };
 
 } // namespace QmlDesigner