diff --git a/src/core/framelesshelpercore_global.cpp b/src/core/framelesshelpercore_global.cpp
index 41a5fd8..86ccc24 100644
--- a/src/core/framelesshelpercore_global.cpp
+++ b/src/core/framelesshelpercore_global.cpp
@@ -45,6 +45,7 @@
 #  include <gtk/gtk.h>
 #endif
 #include <QtCore/qmutex.h>
+#include <QtCore/qtextstream.h>
 #include <QtGui/qguiapplication.h>
 
 #ifndef COMPILER_STRING