diff -r ef0373b55136 -r 758a864f9613 src/gui/itemviews/qabstractitemview.cpp
--- a/src/gui/itemviews/qabstractitemview.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/gui/itemviews/qabstractitemview.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -2270,9 +2270,11 @@
             } else {
                 d->selectionModel->setCurrentIndex(newCurrent, command);
                 d->pressedPosition = visualRect(newCurrent).center() + d->offset();
-                // We copy the same behaviour as for mousePressEvent().
-                QRect rect(d->pressedPosition - d->offset(), QSize(1, 1));
-                setSelection(rect, command);
+                if (newCurrent.isValid()) {
+                    // We copy the same behaviour as for mousePressEvent().
+                    QRect rect(d->pressedPosition - d->offset(), QSize(1, 1));
+                    setSelection(rect, command);
+                }
             }
             event->accept();
             return;