diff --git a/MantidPlot/src/Mantid/MantidApplication.cpp b/MantidPlot/src/Mantid/MantidApplication.cpp
index dead6d262b43dd5d9ed8848ac8e4c0b0be5f7d2a..00d38187960f9b55ee9851b0e879cbad491d2a97 100644
--- a/MantidPlot/src/Mantid/MantidApplication.cpp
+++ b/MantidPlot/src/Mantid/MantidApplication.cpp
@@ -9,6 +9,8 @@
 #include <QMessageBox>
 #include <QPushButton>
 
+#include <iostream>
+
 namespace
 {
   /// static logger