diff --git a/0001-test_pixmap-adjust-to-turbojpeg.patch b/0001-test_pixmap-adjust-to-turbojpeg.patch
new file mode 100644
index 0000000..1c653de
--- /dev/null
+++ b/0001-test_pixmap-adjust-to-turbojpeg.patch
@@ -0,0 +1,29 @@
+From 735ce0fb7bf1938ead530b7138499464c6127f96 Mon Sep 17 00:00:00 2001
+Message-ID: <735ce0fb7bf1938ead530b7138499464c6127f96.1683816092.git.mjg@fedoraproject.org>
+From: Michael J Gruber <mjg@fedoraproject.org>
+Date: Thu, 11 May 2023 16:40:03 +0200
+Subject: [PATCH] test_pixmap: adjust to turbojpeg
+
+Apparantly, different jpeg libraries decode the test jpg differently.
+Adjust to turbojpeg's color count until upstream uses an invariant
+format.
+---
+ tests/test_pixmap.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/test_pixmap.py b/tests/test_pixmap.py
+index 889858b..420245e 100644
+--- a/tests/test_pixmap.py
++++ b/tests/test_pixmap.py
+@@ -91,7 +91,7 @@ def test_setalpha():
+ 
+ def test_color_count():
+     pm = fitz.Pixmap(imgfile)
+-    assert pm.color_count() == 40624
++    assert pm.color_count() == 39912
+ 
+ def test_memoryview():
+     pm = fitz.Pixmap(imgfile)
+-- 
+2.40.1.683.g916cfae490
+
diff --git a/python-PyMuPDF.spec b/python-PyMuPDF.spec
index cf2d5d8..745ffde 100644
--- a/python-PyMuPDF.spec
+++ b/python-PyMuPDF.spec
@@ -2,13 +2,14 @@
 
 Name:           python-%{pypi_name}
 Version:        1.22.3
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Python binding for MuPDF - a lightweight PDF and XPS viewer
 
 License:        AGPL-3.0-or-later
 URL:            https://github.com/pymupdf/PyMuPDF
 Source0:        %{url}/archive/%{version}/%{pypi_name}-%{version}.tar.gz
 Patch0:         0001-fix-test_-font.patch
+Patch1:         0001-test_pixmap-adjust-to-turbojpeg.patch
 
 BuildRequires:  python3-devel
 BuildRequires:  python3-fonttools
@@ -69,8 +70,11 @@ rm -f %{buildroot}%{_prefix}/README.md
 
 %check
 # FIXME: Crashes with Aborted, corrupted double-linked list
+%ifarch s390 s390x
 %pytest || :
-
+%else
+%pytest
+%endif
 
 %files -n python3-%{pypi_name}
 %license COPYING
@@ -81,6 +85,9 @@ rm -f %{buildroot}%{_prefix}/README.md
 %doc docs_built/* README.md
 
 %changelog
+* Thu May 11 2023 Michael J Gruber <mjg@fedoraproject.org> - 1.22.3-2
+- Reenable test suite where possible
+
 * Thu May 11 2023 Michael J Gruber <mjg@fedoraproject.org> - 1.22.3-1
 - Update to new upstream release 1.22.3 (rhbz#2186919)