diff --git a/src/support/SignalSlotPrivate.cpp b/src/support/SignalSlotPrivate.cpp
new file mode 100644
index 0000000000..59bd265ee5
--- /dev/null
+++ b/src/support/SignalSlotPrivate.cpp
@@ -0,0 +1,15 @@
+// -*- C++ -*-
+/**
+ * \file SignalSlotPrivate.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+
+// trigger moc 
+#include "SignalSlotPrivate_moc.cpp"
+