diff --git a/4538-32bit-compatible.patch b/4538-32bit-compatible.patch
deleted file mode 100644
index 1cdef10..0000000
--- a/4538-32bit-compatible.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From 8182bb208e31cf9244dd3e6f567d3e27a33c973e Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Jean-No=C3=ABl=20Grad?= <jgrad@icp.uni-stuttgart.de>
-Date: Wed, 20 Jul 2022 21:25:34 +0200
-Subject: [PATCH 1/2] tests: Fix integral size on 32bit archs
-
----
- src/scafacos/src/Scafacos.cpp               |   13 -------------
- src/utils/tests/integral_parameter_test.cpp |    6 +++---
- 2 files changed, 3 insertions(+), 16 deletions(-)
-
---- a/src/scafacos/src/Scafacos.cpp
-+++ b/src/scafacos/src/Scafacos.cpp
-@@ -21,7 +21,6 @@
- 
- #include "utils.hpp"
- 
--#include <algorithm>
- #include <string>
- #include <utility>
- #include <vector>
-@@ -71,18 +70,6 @@ std::vector<std::string> Scafacos::avail
-   return methods;
- }
- 
--static std::string parse_method_parameters(
--    std::vector<std::vector<std::string>> const &parameters) {
--  std::string method_params = "";
--  for (auto const &parameter : parameters) {
--    for (auto const &value : parameter) {
--      method_params += " " + value;
--    }
--  }
--  std::replace(method_params.begin(), method_params.end(), ' ', ',');
--  return method_params.substr(1);
--}
--
- Scafacos::Scafacos(MPI_Comm comm, std::string method, std::string parameters)
-     : m_method_name{std::move(method)}, m_parameters{std::move(parameters)} {
- 
---- a/src/utils/tests/integral_parameter_test.cpp
-+++ b/src/utils/tests/integral_parameter_test.cpp
-@@ -38,11 +38,11 @@ BOOST_AUTO_TEST_CASE(integral_parameter_
-                    std::pair<std::size_t, int>>::value,
-       "");
- 
--  BOOST_CHECK(std::make_pair(1ul, 13) ==
-+  BOOST_CHECK(std::make_pair(std::size_t{1u}, 13) ==
-               (Utils::integral_parameter<F, 1, 5>(1, 13)));
--  BOOST_CHECK(std::make_pair(3ul, 13) ==
-+  BOOST_CHECK(std::make_pair(std::size_t{3u}, 13) ==
-               (Utils::integral_parameter<F, 1, 5>(3, 13)));
--  BOOST_CHECK(std::make_pair(5ul, 13) ==
-+  BOOST_CHECK(std::make_pair(std::size_t{5u}, 13) ==
-               (Utils::integral_parameter<F, 1, 5>(5, 13)));
-   BOOST_CHECK_THROW((Utils::integral_parameter<F, 1, 5>(6, 13)),
-                     std::exception);
diff --git a/python3-espressomd.changes b/python3-espressomd.changes
index 5393967..9b5c418 100644
--- a/python3-espressomd.changes
+++ b/python3-espressomd.changes
@@ -1,8 +1,3 @@
--------------------------------------------------------------------
-Thu Jul 21 10:36:18 UTC 2022 - Matej Cepl <mcepl@suse.com>
-
-- Add 4538-32bit-compatible.patch to make 32bit build.
-
 -------------------------------------------------------------------
 Tue Jul 19 19:40:59 UTC 2022 - Matej Cepl <mcepl@suse.com>
 
diff --git a/python3-espressomd.spec b/python3-espressomd.spec
index 66f17c3..04ffa14 100644
--- a/python3-espressomd.spec
+++ b/python3-espressomd.spec
@@ -51,10 +51,7 @@ Patch2:         hdf5.patch
 # PATCH-FIX-OPENSUSE rpath.patch boo#1198352
 Patch3:         rpath.patch
 # According to gh#espressomd/espresso#4537 32bit architectures are not supported any more
-# PATCH-FIX-UPSTREAM 4538-32bit-compatible.patch gh#espressomd/espresso#4537 mcepl@suse.com
-# This should help
-Patch4:         4538-32bit-compatible.patch
-# ExcludeArch:    %{ix86}
+ExcludeArch:    %{ix86}
 BuildRequires:  cmake
 BuildRequires:  fftw3-devel
 BuildRequires:  gcc-c++