3 files changed, 13 insertions, 10 deletions
diff --git a/tools/assistant/lib/qhelpcontentwidget.cpp b/tools/assistant/lib/qhelpcontentwidget.cpp
index a80dc39..6f3f942 100644
--- a/tools/assistant/lib/qhelpcontentwidget.cpp
+++ b/tools/assistant/lib/qhelpcontentwidget.cpp
@@ -370,7 +370,8 @@ void QHelpContentModel::invalidateContents(bool onShutDown)
         delete d->rootItem;
         d->rootItem = 0;
     }
-    reset();
+    if (!onShutDown)
+        reset();
 }
 
 /*!
diff --git a/tools/assistant/lib/qhelpengine.cpp b/tools/assistant/lib/qhelpengine.cpp
index 96cf0fd..e8ae31b 100644
--- a/tools/assistant/lib/qhelpengine.cpp
+++ b/tools/assistant/lib/qhelpengine.cpp
@@ -75,14 +75,15 @@ void QHelpEnginePrivate::init(const QString &collectionFile,
 {
     QHelpEngineCorePrivate::init(collectionFile, helpEngineCore);
 
-    contentModel = new QHelpContentModel(this);
-    indexModel = new QHelpIndexModel(this);
-
-    connect(helpEngineCore, SIGNAL(setupFinished()),
-        this, SLOT(applyCurrentFilter()));
-    connect(helpEngineCore, SIGNAL(currentFilterChanged(QString)),
-        this, SLOT(applyCurrentFilter()));
-
+    if (!contentModel)
+        contentModel = new QHelpContentModel(this);
+    if (!indexModel)
+        indexModel = new QHelpIndexModel(this);
+
+    connect(helpEngineCore, SIGNAL(setupFinished()), this,
+        SLOT(applyCurrentFilter()));
+    connect(helpEngineCore, SIGNAL(currentFilterChanged(QString)), this,
+        SLOT(applyCurrentFilter()));
 }
 
 void QHelpEnginePrivate::applyCurrentFilter()
diff --git a/tools/assistant/lib/qhelpindexwidget.cpp b/tools/assistant/lib/qhelpindexwidget.cpp
index 270bcdd..11b9966 100644
--- a/tools/assistant/lib/qhelpindexwidget.cpp
+++ b/tools/assistant/lib/qhelpindexwidget.cpp
@@ -244,7 +244,8 @@ void QHelpIndexModel::invalidateIndex(bool onShutDown)
         disconnect(this, SLOT(insertIndices()));
     d->indexProvider->stopCollecting();
     d->indices.clear();
-    filter(QString());
+    if (!onShutDown)
+        filter(QString());
 }
 
 /*!