diff --git a/less-475-fsync.patch b/less-475-fsync.patch
index 4371461c899f68e196d5dfa5cdefbda27b57d69f..9ba69528ea6c4e77343e601732a3ce262d63ca81 100644
--- a/less-475-fsync.patch
+++ b/less-475-fsync.patch
@@ -15,7 +15,7 @@ diff -ur less-418.orig/configure.ac less-418/configure.ac
  # Checks for library functions.
  AC_TYPE_SIGNAL
 -AC_CHECK_FUNCS([fchmod fsync nanosleep poll popen realpath _setjmp sigprocmask sigsetmask snprintf stat system ttyname usleep])
-+AC_CHECK_FUNCS([popen _setjmp sigprocmask sigsetmask snprintf stat system fchmod realpath])
++AC_CHECK_FUNCS([fchmod nanosleep poll popen realpath _setjmp sigprocmask sigsetmask snprintf stat system ttyname usleep])
  
  # AC_CHECK_FUNCS may not work for inline functions, so test these separately.
  AC_MSG_CHECKING(for memcpy)
diff --git a/less.spec b/less.spec
index 3f158837dd570f279bb1b011aa8515ed0fbd9656..cde07ba0dd7856dc1f281d92599490855476b2bb 100644
--- a/less.spec
+++ b/less.spec
@@ -1,6 +1,6 @@
 Name:		less
 Version:	590
-Release:        2
+Release:        3
 Summary:	Less is a pager that displays text files.
 License:	GPLv3+ or BSD
 URL:		http://www.greenwoodsoftware.com/less
@@ -46,6 +46,12 @@ autoreconf -ivf
 %{_mandir}/man1/*
 
 %changelog
+* Tue Jun 13 2023 yinyongkang <yinyongkang@kylinos.cn> - 590-3
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC: Undelete usleep,nanosleep,ttyname,poll
+
 * Thu Feb 16 2023 hongjinghao <hongjinghao@huawei.com> - 590-2
 - fix CVE-2022-46663