diff --git a/src/frontends/qt/InGuiThread.h b/src/frontends/qt/InGuiThread.h
index 6152570cb2..490ed51752 100644
--- a/src/frontends/qt/InGuiThread.h
+++ b/src/frontends/qt/InGuiThread.h
@@ -17,9 +17,11 @@
 #include <QWaitCondition>
 
 #include "support/bind.h"
-#include "support/functional.h"
 
 namespace lyx {
+
+using std::function;
+
 namespace frontend {
 
 
diff --git a/src/support/Makefile.am b/src/support/Makefile.am
index 8f50e673bd..15e5cfc373 100644
--- a/src/support/Makefile.am
+++ b/src/support/Makefile.am
@@ -65,7 +65,6 @@ liblyxsupport_a_SOURCES = \
 	filetools.h \
 	ForkedCalls.cpp \
 	ForkedCalls.h \
-	functional.h \
 	gettext.cpp \
 	gettext.h \
 	gzstream.cpp \
diff --git a/src/support/bind.h b/src/support/bind.h
index e9b6a63277..ede960eed4 100644
--- a/src/support/bind.h
+++ b/src/support/bind.h
@@ -12,8 +12,6 @@
 #ifndef LYX_BIND_H
 #define LYX_BIND_H
 
-#include "support/functional.h"
-
 namespace lyx
 {
 	using std::placeholders::_1;
diff --git a/src/support/functional.h b/src/support/functional.h
deleted file mode 100644
index 6673dedb81..0000000000
--- a/src/support/functional.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// -*- C++ -*-
-/**
- * \file functional.h
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author Peter Kümmel
- *
- * Full author contact details are available in file CREDITS.
- */
-
-#ifndef LYX_FUNCTIONAL_H
-#define LYX_FUNCTIONAL_H
-
-#include <functional>
-
-namespace lyx
-{
-	using std::function;
-}
-
-
-#endif