diff --git a/which.spec b/which.spec
index ad06ed9..b644114 100644
--- a/which.spec
+++ b/which.spec
@@ -1,7 +1,7 @@
 Summary: Displays where a particular program in your path is located
 Name: which
 Version: 2.21
-Release: 27%{?dist}
+Release: 28%{?dist}
 License: GPLv3
 Source0: http://ftp.gnu.org/gnu/which/%{name}-%{version}.tar.gz
 Source1: which2.sh
@@ -41,6 +41,9 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %{_mandir}/man1/which.1*
 
 %changelog
+* Sun Oct 10 2021 Than Ngo <than@redhat.com> - 2.21-28
+- Resolves: #2009547, which treats function contents as aliases when parsing ksh
+
 * Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.21-27
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
 
diff --git a/which2.sh b/which2.sh
index 6ef7979..2a108e6 100644
--- a/which2.sh
+++ b/which2.sh
@@ -1,19 +1,18 @@
 # shellcheck shell=sh
 # Initialization script for bash, sh, mksh and ksh
 
-which_declare="declare -f"
-which_opt="-f"
 which_shell="$(cat /proc/$$/comm)"
 
 if [ "$which_shell" = "ksh" ] || [ "$which_shell" = "mksh" ] || [ "$which_shell" = "zsh" ] ; then
-  which_declare="typeset -f"
+  alias which_declare="typeset -fS"
   which_opt=""
+else
+  which_opt="-f"
+  alias which_declare="declare -f"
 fi
  
-which ()
-{
-(alias; eval ${which_declare}) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot "$@"
+which () {
+  (alias; which_declare) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot $@
 }
 
-export which_declare
 export ${which_opt} which