diff --git a/Makefile.am b/Makefile.am
index e1b72e7b1..f780fc4df 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1315,7 +1315,6 @@ endif
 #
 
 libinput_a_SOURCES = \
-	src/input/Domain.cxx src/input/Domain.hxx \
 	src/input/Init.cxx src/input/Init.hxx \
 	src/input/Registry.cxx src/input/Registry.hxx \
 	src/input/Open.cxx \
diff --git a/src/input/AsyncInputStream.cxx b/src/input/AsyncInputStream.cxx
index 52c1b18d0..772a87df0 100644
--- a/src/input/AsyncInputStream.cxx
+++ b/src/input/AsyncInputStream.cxx
@@ -19,7 +19,6 @@
 
 #include "config.h"
 #include "AsyncInputStream.hxx"
-#include "Domain.hxx"
 #include "tag/Tag.hxx"
 #include "thread/Cond.hxx"
 #include "event/Loop.hxx"
diff --git a/src/input/Domain.cxx b/src/input/Domain.cxx
deleted file mode 100644
index 9d3977fa0..000000000
--- a/src/input/Domain.cxx
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright 2003-2017 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "Domain.hxx"
-#include "util/Domain.hxx"
-
-const Domain input_domain("input");
diff --git a/src/input/Domain.hxx b/src/input/Domain.hxx
deleted file mode 100644
index 1ba83728f..000000000
--- a/src/input/Domain.hxx
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright 2003-2017 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef MPD_INPUT_DOMAIN_HXX
-#define MPD_INPUT_DOMAIN_HXX
-
-class Domain;
-
-extern const Domain input_domain;
-
-#endif
diff --git a/src/input/Open.cxx b/src/input/Open.cxx
index 1d318b899..177f575ed 100644
--- a/src/input/Open.cxx
+++ b/src/input/Open.cxx
@@ -22,7 +22,6 @@
 #include "Registry.hxx"
 #include "InputPlugin.hxx"
 #include "LocalOpen.hxx"
-#include "Domain.hxx"
 #include "plugins/RewindInputPlugin.hxx"
 #include "fs/Traits.hxx"
 #include "fs/AllocatedPath.hxx"