diff --git a/src/plugins/qt4projectmanager/qtoptionspage.cpp b/src/plugins/qt4projectmanager/qtoptionspage.cpp
index b695c6cde9f57a927e759749dc61b870fbf82cb9..625604ba275d893f86e291dba1a58a085e247252 100644
--- a/src/plugins/qt4projectmanager/qtoptionspage.cpp
+++ b/src/plugins/qt4projectmanager/qtoptionspage.cpp
@@ -607,7 +607,7 @@ void QtOptionsPageWidget::updateCurrentQtPath()
         m_ui->rebuildButton->setEnabled(true);
     } else {
         currentItem->setData(2, Qt::DecorationRole, QIcon());
-        m_ui->rebuildButton->setEnabled(true);
+        m_ui->rebuildButton->setEnabled(false);
     }
     updateDebuggingHelperStateLabel(version);
 }