--- a/QTfrontend/SquareLabel.cpp	Mon Dec 27 23:57:44 2010 +0100
+++ b/QTfrontend/SquareLabel.cpp	Tue Jan 04 12:53:46 2011 +0100
@@ -29,6 +29,8 @@
 
 void SquareLabel::paintEvent(QPaintEvent * event)
 {
+    Q_UNUSED(event);
+
     QPainter painter(this);
     int pixsize;
     if (width() > height()) {