diff --git a/retroshare-gui/src/gui/common/RSGraphWidget.cpp b/retroshare-gui/src/gui/common/RSGraphWidget.cpp
index dab0645c4..48f22638d 100644
--- a/retroshare-gui/src/gui/common/RSGraphWidget.cpp
+++ b/retroshare-gui/src/gui/common/RSGraphWidget.cpp
@@ -301,6 +301,8 @@ RSGraphWidget::~RSGraphWidget()
 {
     delete _painter;
     delete _source ;
+    _timer->stop();
+    delete _timer;
 }
 
 void RSGraphWidget::setFiltering(bool b)