diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index 2ae8a9b2d..f707b72b9 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -38,7 +38,6 @@ liblumi_a_SOURCES =				\
 noinst_HEADERS +=						\
 	$(liblumi_a_srcdir)/plugin.h				\
 	$(liblumi_a_srcdir)/error.h				\
-	$(liblumi_a_srcdir)/locking.h				\
 	$(liblumi_a_srcdir)/mutex.h				\
 	$(liblumi_a_srcdir)/rwlock.h				\
 	$(liblumi_a_srcdir)/condition.h				\
diff --git a/src/lib/locking.h b/src/lib/locking.h
deleted file mode 100644
index 3c4d497d8..000000000
--- a/src/lib/locking.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
-  locking.h  -  shared declarations for all locking primitives
-
-  Copyright (C)         Lumiera.org
-    2008,               Christian Thaeter <ct@pipapo.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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#ifndef LUMIERA_LOCKING_H
-#define LUMIERA_LOCKING_H
-
-#include <pthread.h>
-#include <errno.h>
-#include <nobug.h>
-
-#include "lib/error.h"
-
-
-LUMIERA_ERROR_DECLARE (MUTEX_LOCK);
-LUMIERA_ERROR_DECLARE (MUTEX_UNLOCK);
-LUMIERA_ERROR_DECLARE (MUTEX_DESTROY);
-
-/**
- * @file
- * Shared declarations for all locking primitives.
- */
-
-/**
- * used to store the current lock state.
- *
- *
- */
-enum lumiera_lockstate
-  {
-    LUMIERA_UNLOCKED,
-    LUMIERA_LOCKED,
-    LUMIERA_RDLOCKED,
-    LUMIERA_WRLOCKED
-  };
-
-#endif
diff --git a/src/lib/mutex.h b/src/lib/mutex.h
index bb01a822a..54206f7f1 100644
--- a/src/lib/mutex.h
+++ b/src/lib/mutex.h
@@ -22,13 +22,19 @@
 #ifndef LUMIERA_MUTEX_H
 #define LUMIERA_MUTEX_H
 
-#include "lib/locking.h"
+#include "lib/error.h"
+
+#include <pthread.h>
+#include <nobug.h>
 
 /**
  * @file
  * Mutual exclusion locking, header.
  */
 
+LUMIERA_ERROR_DECLARE (MUTEX_LOCK);
+LUMIERA_ERROR_DECLARE (MUTEX_UNLOCK);
+LUMIERA_ERROR_DECLARE (MUTEX_DESTROY);
 
 /**
  * Mutual exclusive section.