diff --git a/2519439d7d4d0e51abf479afe73f30b1c7c70530.patch b/2519439d7d4d0e51abf479afe73f30b1c7c70530.patch
new file mode 100644
index 0000000000000000000000000000000000000000..1ac5c4faa54585475c6c90305c9655ccdfac395a
--- /dev/null
+++ b/2519439d7d4d0e51abf479afe73f30b1c7c70530.patch
@@ -0,0 +1,14 @@
+diff --git a/thirdparty/libz/gzguts.h b/thirdparty/libz/gzguts.h
+index fb9198550..2c1a1bb73 100644
+--- a/thirdparty/libz/gzguts.h
++++ b/thirdparty/libz/gzguts.h
+@@ -3,7 +3,9 @@
+  * For conditions of distribution and use, see copyright notice in zlib.h
+  */
+ 
++#ifndef _WIN32
+ #include <unistd.h>
++#endif
+ 
+ #ifdef _LARGEFILE64_SOURCE
+ #  ifndef _LARGEFILE_SOURCE
diff --git a/openjpeg2.spec b/openjpeg2.spec
index e4f0659b73c65905a1966d52fcfe88112813f68a..5a3a6e4498f2523789daf209d160e9e176fb993c 100644
--- a/openjpeg2.spec
+++ b/openjpeg2.spec
@@ -1,6 +1,6 @@
 Name:           openjpeg2
 Version:        2.3.1
-Release:        3
+Release:        4
 Summary:        C-Library for JPEG 2000
 License:        BSD and MIT
 URL:            https://github.com/uclouvain/openjpeg
@@ -12,6 +12,7 @@ Patch1:         openjpeg2_opj2.patch
 Patch6000:	CVE-2016-10505.patch
 Patch6001:	CVE-2016-7445.patch
 Patch6002:      CVE-2020-15389.patch
+Patch6003: 2519439d7d4d0e51abf479afe73f30b1c7c70530.patch
 
 BuildRequires:  cmake gcc-c++ make zlib-devel libpng-devel libtiff-devel lcms2-devel doxygen
 
@@ -87,6 +88,9 @@ mv %{buildroot}%{_mandir}/man1/opj_dump.1 %{buildroot}%{_mandir}/man1/opj2_dump.
 %{_mandir}/man3/*.3*
 
 %changelog
+* 20201231215849762387 patch-tracking 2.3.1-4
+- append patch file of upstream repository from <2519439d7d4d0e51abf479afe73f30b1c7c70530> to <2519439d7d4d0e51abf479afe73f30b1c7c70530>
+
 * Sat Jul 25 2020 zhangnaru <zhangnaru@huawei.com> -2.3.1-3
 - fix CVE-2020-15389 
 
@@ -94,4 +98,4 @@ mv %{buildroot}%{_mandir}/man1/opj_dump.1 %{buildroot}%{_mandir}/man1/opj2_dump.
 - fix CVE-2016-10505 and CVE-2016-7445
 
 * Thu Sep 19 2019 openEuler Buildteam <buildteam@openeuler.org> - 2.3.1-1
-- Package init
+- Package init
\ No newline at end of file