diff --git a/projects/VC90/SimGear.vcproj b/projects/VC90/SimGear.vcproj
index 6c244843..f3d50894 100644
--- a/projects/VC90/SimGear.vcproj
+++ b/projects/VC90/SimGear.vcproj
@@ -671,14 +671,6 @@
 				RelativePath="..\..\simgear\misc\sg_path.hxx"
 				>
 			</File>
-			<File
-				RelativePath="..\..\simgear\misc\sg_sleep.cxx"
-				>
-			</File>
-			<File
-				RelativePath="..\..\simgear\misc\sg_sleep.hxx"
-				>
-			</File>
 			<File
 				RelativePath="..\..\simgear\misc\sgstream.cxx"
 				>
diff --git a/simgear/misc/CMakeLists.txt b/simgear/misc/CMakeLists.txt
index 7a06f3bd..43904321 100644
--- a/simgear/misc/CMakeLists.txt
+++ b/simgear/misc/CMakeLists.txt
@@ -7,7 +7,6 @@ set(HEADERS
     interpolator.hxx
     sg_dir.hxx
     sg_path.hxx
-    sg_sleep.hxx
     sgstream.hxx
     stdint.hxx
     stopwatch.hxx
@@ -24,7 +23,6 @@ set(SOURCES
     interpolator.cxx
     sg_dir.cxx
     sg_path.cxx
-    sg_sleep.cxx
     sgstream.cxx
     strutils.cxx
     tabbed_values.cxx
diff --git a/simgear/misc/Makefile.am b/simgear/misc/Makefile.am
index ae696e79..e671418a 100644
--- a/simgear/misc/Makefile.am
+++ b/simgear/misc/Makefile.am
@@ -14,8 +14,7 @@ include_HEADERS = \
 	stdint.hxx \
 	PathOptions.hxx \
 	sg_dir.hxx \
-	ResourceManager.hxx \
-	sg_sleep.hxx
+	ResourceManager.hxx
 
 libsgmisc_a_SOURCES = \
 	sg_path.cxx \
@@ -27,8 +26,7 @@ libsgmisc_a_SOURCES = \
 	interpolator.cxx \
 	PathOptions.cxx \
 	sg_dir.cxx \
-	ResourceManager.cxx \
-	sg_sleep.cxx
+	ResourceManager.cxx
 
 #noinst_PROGRAMS = tabbed_value_test swap_test
 
diff --git a/simgear/misc/sg_sleep.cxx b/simgear/misc/sg_sleep.cxx
deleted file mode 100644
index a52880c5..00000000
--- a/simgear/misc/sg_sleep.cxx
+++ /dev/null
@@ -1,60 +0,0 @@
-
-// Written by James Turner, started July 2010.
-//
-// Copyright (C) 2010  Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Library General Public
-// License as published by the Free Software Foundation; either
-// version 2 of the License, or (at your option) any later version.
-//
-// This library 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
-// Library 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.
-//
-// $Id$
-
-#include <simgear/misc/sg_sleep.hxx>
-
-#ifdef SG_WINDOWS
-# include <windows.h>
-#else
-# include <unistd.h>
-#endif
-
-namespace simgear
-{
-
-#ifdef SG_WINDOWS
-
-void sleepForSeconds(int seconds)
-{
-  Sleep(1000 * seconds);
-}
-
-void sleepForMSec(int msec)
-{
-  Sleep(msec);
-}
-
-#else
-
-void sleepForSeconds(int seconds)
-{
-  ::sleep(seconds);
-}
-
-void sleepForMSec(int msec)
-{
-  ::usleep(msec * 1000);
-}
-
-#endif
-
-} // of namespace simhear
-
diff --git a/simgear/misc/sg_sleep.hxx b/simgear/misc/sg_sleep.hxx
deleted file mode 100644
index 389fdff3..00000000
--- a/simgear/misc/sg_sleep.hxx
+++ /dev/null
@@ -1,41 +0,0 @@
-
-// Written by James Turner, started July 2010.
-//
-// Copyright (C) 2010  Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Library General Public
-// License as published by the Free Software Foundation; either
-// version 2 of the License, or (at your option) any later version.
-//
-// This library 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
-// Library 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.
-//
-// $Id$
-
-
-#ifndef _SG_SLEEP_HXX
-#define _SG_SLEEP_HXX
-
-
-#include <simgear/compiler.h>
-
-
-namespace simgear
-{
-
-void sleepForSeconds(int seconds);
-
-void sleepForMSec(int msec);
-
-} // of namespace simgear
-
-#endif // _SG_SLEEP_HXX
-
-