diff --git a/SOURCES/zlib-1.2.11-IBM-Z-hw-accelrated-deflate-strm-adler-fix.patch b/SOURCES/zlib-1.2.11-IBM-Z-hw-accelrated-deflate-strm-adler-fix.patch
new file mode 100644
index 0000000..8f70f9b
--- /dev/null
+++ b/SOURCES/zlib-1.2.11-IBM-Z-hw-accelrated-deflate-strm-adler-fix.patch
@@ -0,0 +1,11 @@
+--- a/contrib/s390/dfltcc.c
++++ b/contrib/s390/dfltcc.c
+@@ -623,7 +623,7 @@
+     state->bits = param->sbb;
+     state->whave = param->hl;
+     state->wnext = (param->ho + param->hl) & ((1 << HB_BITS) - 1);
+-    state->check = state->flags ? ZSWAP32(param->cv) : param->cv;
++    strm->adler = state->check = state->flags ? ZSWAP32(param->cv) : param->cv;
+     if (cc == DFLTCC_CC_OP2_CORRUPT && param->oesc != 0) {
+         /* Report an error if stream is corrupted */
+         state->mode = BAD;
diff --git a/SPECS/zlib.spec b/SPECS/zlib.spec
index 2b2c271..63e9a7f 100644
--- a/SPECS/zlib.spec
+++ b/SPECS/zlib.spec
@@ -3,7 +3,7 @@
 
 Name:    zlib
 Version: 1.2.11
-Release: 21%{?dist}
+Release: 22%{?dist}
 Summary: The compression and decompression library
 # /contrib/dotzlib/ have Boost license
 License: zlib and Boost
@@ -39,7 +39,10 @@ Patch11: zlib-1.2.11-IBM-Z-hw-accelrated-deflate-compressBound-fix.patch
 Patch12: zlib-1.2.11-cve-2022-37434.patch
 Patch13: zlib-1.2.11-cve-2022-37434_2.patch
 
-# Intel optimization
+# Fix setting strm.adler on z15
+Patch14: zlib-1.2.11-IBM-Z-hw-accelrated-deflate-strm-adler-fix.patch
+
+# Intel SSE2 optimization
 Patch100: zlib-1.2.11-optimize-fill_window.patch
 
 BuildRequires: automake, autoconf, libtool
@@ -107,6 +110,7 @@ developing applications which use minizip.
 %patch11 -p1
 %patch12 -p1
 %patch13 -p1
+%patch14 -p1
 %patch100 -p1
 
 iconv -f iso-8859-2 -t utf-8 < ChangeLog > ChangeLog.tmp
@@ -191,6 +195,9 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 
 
 %changelog
+* Wed Oct 12 2022 Ilya Leoshkevich <iii@linux.ibm.com> - 1.2.11-22
+- Fix for IBM strm.adler rhbz#2134074
+
 * Tue Aug 09 2022 Matej Mužila <mmuzila@redhat.com> - 1.2.11-21
 - Fix heap-based buffer over-read or buffer overflow in inflate in inflate.c
 - Resolves: CVE-2022-37434
@@ -201,7 +208,7 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 - Resolves: #2056900
 
 * Tue May 03 2022 Ali Erdinc Koroglu <aekoroglu@centosproject.org> 1.2.11-19
-- Intel optimization patch added
+- Intel SSE2 optimized slide_hash
 
 * Tue Mar 29 2022 Matej Mužila <mmuzila@redhat.com> - 1.2.11-18
 - Resolves: CVE-2018-25032