diff --git a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
index d9a1c6b871b..f1fd6015c97 100644
--- a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
@@ -431,6 +431,7 @@ void Qt4RunConfigurationWidget::termToggled(bool on)
 
 void Qt4RunConfigurationWidget::qvfbToggled(bool on)
 {
+    Q_UNUSED(on);
     m_ignoreChange = true;
     m_ignoreChange = false;
 }