diff --git a/SOURCES/ksh-20140801-arraylen.patch b/SOURCES/ksh-20140801-arraylen.patch
new file mode 100644
index 0000000..34c9b6b
--- /dev/null
+++ b/SOURCES/ksh-20140801-arraylen.patch
@@ -0,0 +1,11 @@
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-04-02 10:55:26.228017873 -0400
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-04-02 10:56:04.099017700 -0400
+@@ -1234,7 +1234,7 @@ int sh_exec(register const Shnode_t *t, 
+ 			if((io||argn))
+ 			{
+ 				Shbltin_t *bp=0;
+-				static char *argv[1];
++				static char *argv[2];
+ 				int tflags = 1;
+ 				if(np &&  nv_isattr(np,BLT_DCL))
+ 					tflags |= 2;
diff --git a/SPECS/ksh.spec b/SPECS/ksh.spec
index c2eb715..eb27d68 100644
--- a/SPECS/ksh.spec
+++ b/SPECS/ksh.spec
@@ -8,7 +8,7 @@ Group:        System Environment/Shells
 #CPL everywhere else (for KSH itself)
 License:      EPL
 Version:      20120801
-Release:      22%{?dist}
+Release:      22%{?dist}.1
 Source0:      http://www.research.att.com/~gsf/download/tgz/ast-ksh.%{releasedate}.tgz
 Source1:      http://www.research.att.com/~gsf/download/tgz/INIT.%{releasedate}.tgz
 Source2:      kshcomp.conf
@@ -126,6 +126,9 @@ Patch52: ksh-20120801-retfix.patch
 # sent upstream, for ksh <= 2014-09-30
 Patch53: ksh-20120801-cdfork.patch
 
+# not upstream yet, for ksh <= 2015-04-03, rhbz#1200534
+Patch54: ksh-20140801-arraylen.patch
+
 BuildRoot:    %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Conflicts:    pdksh
 Requires: coreutils, diffutils, chkconfig
@@ -182,6 +185,7 @@ with "sh" (the Bourne Shell).
 %patch51 -p1 -b .cdfix4
 %patch52 -p1 -b .retfix
 %patch53 -p1 -b .cdfork
+%patch54 -p1 -b .arraylen
 
 #/dev/fd test does not work because of mock
 sed -i 's|ls /dev/fd|ls /proc/self/fd|' src/cmd/ksh93/features/options
@@ -307,6 +311,9 @@ fi
     rm -rf $RPM_BUILD_ROOT
 
 %changelog
+* Tue Apr 07 2015 Michal Hlavinka <mhlavink@redhat.com> - 20120801-22.1
+- using trap DEBUG could cause segmentation fault (#1209507)
+
 * Mon Nov 24 2014 Michal Hlavinka <mhlavink@redhat.com> - 20120801-22
 - fix postun scriptlet (#1146161)