diff --git a/python-fastavro.changes b/python-fastavro.changes
index 4ecf48f..e7f0da3 100644
--- a/python-fastavro.changes
+++ b/python-fastavro.changes
@@ -2,6 +2,7 @@
 Fri Nov 22 11:26:56 UTC 2024 - Matej Cepl <mcepl@cepl.eu>
 
 - Clean up the SPEC file.
+- Doesn’t work on 32bit architectures (gh#fastavro/fastavro#526).
 
 -------------------------------------------------------------------
 Fri Nov  1 19:21:31 UTC 2024 - Fergal Mc Carthy <fmccarthy@suse.com>
diff --git a/python-fastavro.spec b/python-fastavro.spec
index a807da5..7537c8d 100644
--- a/python-fastavro.spec
+++ b/python-fastavro.spec
@@ -22,6 +22,8 @@ Version:        1.9.7
 Release:        0
 Summary:        Fast read/write of AVRO files
 License:        MIT
+# gh#fastavro/fastavro#526 … doesn’t work on 32bit
+ExcludeArch:    %{ix86}
 URL:            https://github.com/fastavro/fastavro
 Source:         https://files.pythonhosted.org/packages/source/f/fastavro/fastavro-%{version}.tar.gz
 BuildRequires:  %{python_module devel}