diff --git a/winsup/mingw/ChangeLog b/winsup/mingw/ChangeLog
index 504797d2c..f3bcac30b 100644
--- a/winsup/mingw/ChangeLog
+++ b/winsup/mingw/ChangeLog
@@ -1,4 +1,11 @@
-2008-04-02 Ramiro Polla  <ramiro@lisha.ufsc.br>
+2008-05-04 Ramiro Polla <ramiro@lisha.ufsc.br>
+
+	* include/sys/time.h (useconds_t): typedef.
+	* include/unistd.h (usleep): Add prototype.
+	* mingwex/usleep.c: New file.
+	* mingwex/makefile.in: Add usleep source and object.
+
+2008-05-02 Ramiro Polla <ramiro@lisha.ufsc.br>
 
 	Make strtod() conform to C99.
 
diff --git a/winsup/mingw/include/unistd.h b/winsup/mingw/include/unistd.h
index 90934a0ed..54dbc6699 100644
--- a/winsup/mingw/include/unistd.h
+++ b/winsup/mingw/include/unistd.h
@@ -31,6 +31,11 @@
 extern "C" {
 #endif
 
+#if !defined __NO_ISOCEXT
+#include <sys/types.h> /* For useconds_t. */
+
+int __cdecl __MINGW_NOTHROW usleep(useconds_t useconds);
+#endif  /* Not __NO_ISOCEXT */
 
 /* This is defined as a real library function to allow autoconf
    to verify its existence. */
diff --git a/winsup/mingw/mingwex/Makefile.in b/winsup/mingw/mingwex/Makefile.in
index 3dd91a5b7..9010634cb 100644
--- a/winsup/mingw/mingwex/Makefile.in
+++ b/winsup/mingw/mingwex/Makefile.in
@@ -38,6 +38,7 @@ DISTFILES = Makefile.in configure configure.in aclocal.m4 \
 	wcrtomb.c wctob.c mbrtowc.c btowc.c mb_wc_common.h \
 	gettimeofday.c isblank.c iswblank.c \
 	basename.c dirname.c \
+	usleep.c \
 	tsearch.c twalk.c tdelete.c tfind.c
 
 MATH_DISTFILES = \
@@ -174,6 +175,7 @@ FENV_OBJS = fesetround.o  fegetround.o \
 	feraiseexcept.o fetestexcept.o fesetexceptflag.o
 POSIX_OBJS = \
 	dirent.o wdirent.o getopt.o ftruncate.o gettimeofday.o \
+	usleep.o \
 	basename.o dirname.o tsearch.o twalk.o tdelete.o tfind.o
 REPLACE_OBJS = \
 	mingw-aligned-malloc.o mingw-fseek.o
diff --git a/winsup/mingw/mingwex/usleep.c b/winsup/mingw/mingwex/usleep.c
new file mode 100755
index 000000000..b322a7703
--- /dev/null
+++ b/winsup/mingw/mingwex/usleep.c
@@ -0,0 +1,40 @@
+/*
+ * usleep
+ * Implementation according to:
+ * The Open Group Base Specifications Issue 6
+ * IEEE Std 1003.1, 2004 Edition
+ */
+
+/*
+ *  THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ *  This source code is offered for use in the public domain. You may
+ *  use, modify or distribute it freely.
+ *
+ *  This code is distributed in the hope that it will be useful but
+ *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
+ *  DISCLAIMED. This includes but is not limited to warranties of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *  Contributed by:
+ *  Ramiro Polla <ramiro@lisha.ufsc.br>
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+int __cdecl usleep(useconds_t useconds)
+{
+    if(useconds == 0)
+        return 0;
+
+    if(useconds >= 1000000)
+        return EINVAL;
+
+    Sleep(useconds / 1000);
+
+    return 0;
+}