diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index e0721fb965..4b2a58008a 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,8 @@
+2007-04-14	Ralf Corsépius <ralf.corsepius@rtems.org>
+
+	* posix/src/usleep.c, libcsupport/src/readlink.c:
+	Update API to SUSv3.
+
 2007-04-13	Ralf Corsépius <ralf.corsepius@rtems.org>
 
 	* posix/Makefile.am: Unconditionally build src/sleep.c,
diff --git a/cpukit/libcsupport/src/readlink.c b/cpukit/libcsupport/src/readlink.c
index f2ec9781c5..238830a187 100644
--- a/cpukit/libcsupport/src/readlink.c
+++ b/cpukit/libcsupport/src/readlink.c
@@ -18,10 +18,10 @@
 #include <rtems/libio_.h>
 #include <rtems/seterr.h>
 
-int readlink(
+ssize_t readlink(
   const char *pathname,
   char       *buf,
-  int         bufsize
+  size_t      bufsize
 )
 {
   rtems_filesystem_location_info_t  loc;
diff --git a/cpukit/posix/src/usleep.c b/cpukit/posix/src/usleep.c
index 6753cfe713..af09f2cdc8 100644
--- a/cpukit/posix/src/usleep.c
+++ b/cpukit/posix/src/usleep.c
@@ -15,8 +15,8 @@
 #include <rtems/score/tod.h>
 
 
-unsigned usleep(
-  unsigned int useconds
+int usleep(
+  useconds_t useconds
 )
 {
   struct timespec tp;