diff --git a/Test-suite-fix-Korn-shell-incompatibility.patch b/Test-suite-fix-Korn-shell-incompatibility.patch
new file mode 100644
index 0000000..0508d24
--- /dev/null
+++ b/Test-suite-fix-Korn-shell-incompatibility.patch
@@ -0,0 +1,28 @@
+From 8f52e719d7b35e9f89b1e75d3aa8d3063de6d81a Mon Sep 17 00:00:00 2001
+From: Andreas Gruenbacher <agruen@gnu.org>
+Date: Wed, 7 Feb 2018 17:05:00 +0100
+Subject: [PATCH] Test suite: fix Korn shell incompatibility
+
+tests/merge: In a Korn shell, shift apparently fails when $# is 0.
+
+Signed-off-by: Xibo.Wang <wangxb12@chinatelecom.cn>
+---
+ tests/merge | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/merge b/tests/merge
+index b628891..e950b92 100644
+--- a/tests/merge
++++ b/tests/merge
+@@ -32,7 +32,7 @@ x2() {
+ 	shift
+     done > b.sed
+     echo "$body" | sed -f b.sed > b
+-    shift
++    test $# -eq 0 || shift
+     while test $# -gt 0 ; do
+ 	echo "$1"
+ 	shift
+-- 
+1.8.3.1
+
diff --git a/patch.spec b/patch.spec
index ca94965..d17e98f 100644
--- a/patch.spec
+++ b/patch.spec
@@ -1,6 +1,6 @@
 Name:		patch
 Version:	2.7.6
-Release:	15
+Release:	16
 Summary:	Utiliity which applies a patch file to original files.
 License:	GPLv3+
 URL:	 	http://www.gnu.org/software/patch/patch.html
@@ -16,6 +16,7 @@ Patch7:         CVE-2019-13636.patch
 Patch8:         patch-selinux.patch
 Patch9:         Avoid-set_file_attributes-sign-conversion-warnings.patch
 Patch10:        Test-suite-compatibility-fixes.patch 
+Patch11:        Test-suite-fix-Korn-shell-incompatibility.patch
 
 BuildRequires:	gcc libselinux-devel libattr-devel ed
 Buildroot:	%{_tmppath}/%{name}-%{version}-%{release}-root-root
@@ -58,6 +59,9 @@ CFLAGS="$RPM_OPT_FLAGS -D_GNU_SOURCE"
 %{_mandir}/man1/*
 
 %changelog
+* Wed Dec 28 2022 Xibo.Wang <wangxb12@chinatelecom.cn> - 2.7.6-16
+- Test suite: fix Korn shell incompatibility
+
 * Wed Dec 28 2022 Xibo.Wang <wangxb12@chinatelecom.cn> - 2.7.6-15
 - Test suite compatibility fixes