diff --git a/src/viewer/OsgWidget.cpp b/src/viewer/OsgWidget.cpp
index c2902f79..2e484e25 100644
--- a/src/viewer/OsgWidget.cpp
+++ b/src/viewer/OsgWidget.cpp
@@ -46,6 +46,8 @@ OsgWidget::OsgWidget(QWidget* parent, Qt::WindowFlags f)
     
     connect( &timer_, SIGNAL(timeout()), this, SLOT(update()) );
     timer_.start( 10 );
+
+    setMinimumSize(100, 100);
     LOG_INFO("OsgWidget::OsgWidget");
 }