diff --git a/src/frontends/qt4/GuiApplication.C b/src/frontends/qt4/GuiApplication.C
index a805c18463..fb5a1b0432 100644
--- a/src/frontends/qt4/GuiApplication.C
+++ b/src/frontends/qt4/GuiApplication.C
@@ -40,6 +40,7 @@
 #include <QLocale>
 #include <QLibraryInfo>
 #include <QTextCodec>
+#include <QTimer>
 #include <QTranslator>
 #include <QWidget>