diff --git a/src/plugins/help/helpplugin.cpp b/src/plugins/help/helpplugin.cpp
index eb4cd404800bc7ff89e3a10718b0762e4fad650e..83df160161de5d458719c5678c26bdc0014b5aad 100644
--- a/src/plugins/help/helpplugin.cpp
+++ b/src/plugins/help/helpplugin.cpp
@@ -296,9 +296,9 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
     Aggregation::Aggregate *agg = new Aggregation::Aggregate;
     agg->add(m_centralWidget);
     agg->add(new HelpFindSupport(m_centralWidget));
-    m_mainWidget = new QWidget;
-    m_splitter->addWidget(m_mainWidget);
-    QVBoxLayout *mainWidgetLayout = new QVBoxLayout(m_mainWidget);
+    QWidget *mainWidget = new QWidget;
+    m_splitter->addWidget(mainWidget);
+    QVBoxLayout *mainWidgetLayout = new QVBoxLayout(mainWidget);
     mainWidgetLayout->setMargin(0);
     mainWidgetLayout->setSpacing(0);
     mainWidgetLayout->addWidget(createToolBar());
diff --git a/src/plugins/help/helpplugin.h b/src/plugins/help/helpplugin.h
index 73f68ba4f99ef201afe6ac15722d097fca342a07..8ba4457b7782361568ccc253dd29bae95b3ca3cd 100644
--- a/src/plugins/help/helpplugin.h
+++ b/src/plugins/help/helpplugin.h
@@ -118,7 +118,6 @@ private:
 private:
     HelpMode *m_mode;
     Core::ICore *m_core;
-    QWidget *m_mainWidget;
     CentralWidget *m_centralWidget;
     HelpViewer *m_helpViewerForSideBar;