diff --git a/src/barchart/qbarmodelmapper.cpp b/src/barchart/qbarmodelmapper.cpp
index b09aaba..5982617 100644
--- a/src/barchart/qbarmodelmapper.cpp
+++ b/src/barchart/qbarmodelmapper.cpp
@@ -58,6 +58,7 @@ void QBarModelMapper::setModel(QAbstractItemModel *model)
     connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
+    connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed()));
 }
 
 QAbstractBarSeries* QBarModelMapper::series() const
@@ -81,6 +82,7 @@ void QBarModelMapper::setSeries(QAbstractBarSeries *series)
     // connect the signals from the series
     connect(d->m_series, SIGNAL(barsetsAdded(QList<QBarSet*>)), d, SLOT(barSetsAdded(QList<QBarSet*>)));
     connect(d->m_series, SIGNAL(barsetsRemoved(QList<QBarSet*>)), d, SLOT(barSetsRemoved(QList<QBarSet*>)));
+    connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed()));
 }
 
 /*!
@@ -247,6 +249,11 @@ QModelIndex QBarModelMapperPrivate::barModelIndex(int barSection, int posInBar)
         return m_model->index(barSection, posInBar + m_first);
 }
 
+void QBarModelMapperPrivate::handleSeriesDestroyed()
+{
+    m_series = 0;
+}
+
 void QBarModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
 {
     Q_UNUSED(topLeft)
@@ -360,6 +367,11 @@ void QBarModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, 
     blockSeriesSignals(false);
 }
 
+void QBarModelMapperPrivate::handleModelDestroyed()
+{
+    m_model = 0;
+}
+
 void QBarModelMapperPrivate::insertData(int start, int end)
 {
     Q_UNUSED(end)
diff --git a/src/barchart/qbarmodelmapper_p.h b/src/barchart/qbarmodelmapper_p.h
index f0e4334..e1d931d 100644
--- a/src/barchart/qbarmodelmapper_p.h
+++ b/src/barchart/qbarmodelmapper_p.h
@@ -54,6 +54,7 @@ public Q_SLOTS:
     void modelRowsRemoved(QModelIndex parent, int start, int end);
     void modelColumnsAdded(QModelIndex parent, int start, int end);
     void modelColumnsRemoved(QModelIndex parent, int start, int end);
+    void handleModelDestroyed();
 
     // for the series
     void barSetsAdded(QList<QBarSet*> sets);
@@ -62,6 +63,7 @@ public Q_SLOTS:
     void valuesRemoved(int index, int count);
     void barLabelChanged();
     void barValueChanged(int index);
+    void handleSeriesDestroyed();
 
     void initializeBarFromModel();
 
diff --git a/src/piechart/qpiemodelmapper.cpp b/src/piechart/qpiemodelmapper.cpp
index 1d1c06c..14e62fc 100644
--- a/src/piechart/qpiemodelmapper.cpp
+++ b/src/piechart/qpiemodelmapper.cpp
@@ -56,6 +56,7 @@ void QPieModelMapper::setModel(QAbstractItemModel *model)
     connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
+    connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed()));
 }
 
 QPieSeries* QPieModelMapper::series() const
@@ -79,6 +80,7 @@ void QPieModelMapper::setSeries(QPieSeries *series)
     // connect the signals from the series
     connect(d->m_series, SIGNAL(added(QList<QPieSlice*>)), d, SLOT(slicesAdded(QList<QPieSlice*>)));
     connect(d->m_series, SIGNAL(removed(QList<QPieSlice*>)), d, SLOT(slicesRemoved(QList<QPieSlice*>)));
+    connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed()));
 }
 
 /*!
@@ -360,6 +362,11 @@ void QPieModelMapperPrivate::sliceValueChanged()
     blockModelSignals(false);
 }
 
+void QPieModelMapperPrivate::handleSeriesDestroyed()
+{
+    m_series = 0;
+}
+
 void QPieModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
 {
     if (m_model == 0 || m_series == 0)
@@ -443,6 +450,11 @@ void QPieModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, 
     blockSeriesSignals(false);
 }
 
+void QPieModelMapperPrivate::handleModelDestroyed()
+{
+    m_model = 0;
+}
+
 void QPieModelMapperPrivate::insertData(int start, int end)
 {
     if (m_model == 0 || m_series == 0)
diff --git a/src/piechart/qpiemodelmapper_p.h b/src/piechart/qpiemodelmapper_p.h
index 89242ff..ac32d5b 100644
--- a/src/piechart/qpiemodelmapper_p.h
+++ b/src/piechart/qpiemodelmapper_p.h
@@ -56,12 +56,14 @@ public Q_SLOTS:
     void modelRowsRemoved(QModelIndex parent, int start, int end);
     void modelColumnsAdded(QModelIndex parent, int start, int end);
     void modelColumnsRemoved(QModelIndex parent, int start, int end);
+    void handleModelDestroyed();
 
     // for the series
     void slicesAdded(QList<QPieSlice*> slices);
     void slicesRemoved(QList<QPieSlice*> slices);
     void sliceLabelChanged();
     void sliceValueChanged();
+    void handleSeriesDestroyed();
 
     void initializePieFromModel();
 
diff --git a/src/xychart/qxymodelmapper.cpp b/src/xychart/qxymodelmapper.cpp
index 9db2f8f..5ca618f 100644
--- a/src/xychart/qxymodelmapper.cpp
+++ b/src/xychart/qxymodelmapper.cpp
@@ -64,6 +64,7 @@ void QXYModelMapper::setModel(QAbstractItemModel *model)
     connect(d->m_model, SIGNAL(rowsRemoved(QModelIndex,int,int)), d, SLOT(modelRowsRemoved(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsInserted(QModelIndex,int,int)), d, SLOT(modelColumnsAdded(QModelIndex,int,int)));
     connect(d->m_model, SIGNAL(columnsRemoved(QModelIndex,int,int)), d, SLOT(modelColumnsRemoved(QModelIndex,int,int)));
+    connect(d->m_model, SIGNAL(destroyed()), d, SLOT(handleModelDestroyed()));
 }
 
 /*!
@@ -94,6 +95,7 @@ void QXYModelMapper::setSeries(QXYSeries *series)
     connect(d->m_series, SIGNAL(pointAdded(int)), d, SLOT(handlePointAdded(int)));
     connect(d->m_series, SIGNAL(pointRemoved(int)), d, SLOT(handlePointRemoved(int)));
     connect(d->m_series, SIGNAL(pointReplaced(int)), d, SLOT(handlePointReplaced(int)));
+    connect(d->m_series, SIGNAL(destroyed()), d, SLOT(handleSeriesDestroyed()));
 }
 
 /*!
@@ -291,6 +293,11 @@ void QXYModelMapperPrivate::handlePointReplaced(int pointPos)
     blockModelSignals(false);
 }
 
+void QXYModelMapperPrivate::handleSeriesDestroyed()
+{
+    m_series = 0;
+}
+
 void QXYModelMapperPrivate::modelUpdated(QModelIndex topLeft, QModelIndex bottomRight)
 {
     if (m_model == 0 || m_series == 0)
@@ -391,6 +398,11 @@ void QXYModelMapperPrivate::modelColumnsRemoved(QModelIndex parent, int start, i
     blockSeriesSignals(false);
 }
 
+void QXYModelMapperPrivate::handleModelDestroyed()
+{
+    m_model = 0;
+}
+
 void QXYModelMapperPrivate::insertData(int start, int end)
 {
     if (m_model == 0 || m_series == 0)
diff --git a/src/xychart/qxymodelmapper_p.h b/src/xychart/qxymodelmapper_p.h
index 840b097..506d1dd 100644
--- a/src/xychart/qxymodelmapper_p.h
+++ b/src/xychart/qxymodelmapper_p.h
@@ -56,11 +56,13 @@ public Q_SLOTS:
     void modelRowsRemoved(QModelIndex parent, int start, int end);
     void modelColumnsAdded(QModelIndex parent, int start, int end);
     void modelColumnsRemoved(QModelIndex parent, int start, int end);
+    void handleModelDestroyed();
 
     // for the series
     void handlePointAdded(int pointPos);
     void handlePointRemoved(int pointPos);
     void handlePointReplaced(int pointPos);
+    void handleSeriesDestroyed();
 
     void initializeXYFromModel();