diff --git a/61ff143ad63b9bbe12b6da266f8619b2cb2c3559.patch b/61ff143ad63b9bbe12b6da266f8619b2cb2c3559.patch
new file mode 100644
index 0000000000000000000000000000000000000000..05c1d83b61eb4e16914099b4b57e5fafc82bcc14
--- /dev/null
+++ b/61ff143ad63b9bbe12b6da266f8619b2cb2c3559.patch
@@ -0,0 +1,13 @@
+diff --git a/src/lib/openjp2/dwt.c b/src/lib/openjp2/dwt.c
+index ee9eb5e63..4164ba090 100644
+--- a/src/lib/openjp2/dwt.c
++++ b/src/lib/openjp2/dwt.c
+@@ -1976,7 +1976,7 @@ void opj_dwt_calc_explicit_stepsizes(opj_tccp_t * tccp, OPJ_UINT32 prec)
+         if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
+             stepsize = 1.0;
+         } else {
+-            OPJ_FLOAT64 norm = opj_dwt_norms_real[orient][level];
++            OPJ_FLOAT64 norm = opj_dwt_getnorm_real(level, orient);
+             stepsize = (1 << (gain)) / norm;
+         }
+         opj_dwt_encode_stepsize((OPJ_INT32) floor(stepsize * 8192.0),
diff --git a/openjpeg2.spec b/openjpeg2.spec
index e4f0659b73c65905a1966d52fcfe88112813f68a..5ddc925fa59fae6084eefbca6fd50c47f84fc443 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: 61ff143ad63b9bbe12b6da266f8619b2cb2c3559.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
+* 20201201185849762645 patch-tracking 2.3.1-4
+- append patch file of upstream repository from <61ff143ad63b9bbe12b6da266f8619b2cb2c3559> to <61ff143ad63b9bbe12b6da266f8619b2cb2c3559>
+
 * 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