diff --git a/src/lib/smbclient/Mutex.cxx b/src/lib/smbclient/Mutex.cxx
deleted file mode 100644
index 7ab4bfbb1..000000000
--- a/src/lib/smbclient/Mutex.cxx
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright 2003-2020 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 "Mutex.hxx"
-
-Mutex smbclient_mutex;
diff --git a/src/lib/smbclient/Mutex.hxx b/src/lib/smbclient/Mutex.hxx
deleted file mode 100644
index d5fec83ea..000000000
--- a/src/lib/smbclient/Mutex.hxx
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2003-2020 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_SMBCLIENT_MUTEX_HXX
-#define MPD_SMBCLIENT_MUTEX_HXX
-
-#include "thread/Mutex.hxx"
-
-/**
- * Since libsmbclient is not thread-safe, this mutex must be locked
- * during all libsmbclient function calls.
- */
-extern Mutex smbclient_mutex;
-
-#endif
diff --git a/src/lib/smbclient/meson.build b/src/lib/smbclient/meson.build
index 24aee8c7c..9c159dd65 100644
--- a/src/lib/smbclient/meson.build
+++ b/src/lib/smbclient/meson.build
@@ -7,7 +7,6 @@ endif
 smbclient = static_library(
   'smbclient',
   'Domain.cxx',
-  'Mutex.cxx',
   'Init.cxx',
   'Context.cxx',
   include_directories: inc,