diff --git a/SLOF.spec b/SLOF.spec
index 3679c9f..1f09368 100644
--- a/SLOF.spec
+++ b/SLOF.spec
@@ -1,3 +1,5 @@
+%undefine _auto_set_build_flags
+
 %global gittagdate 20210217
 %global gittagcommit 33a7322d
 
@@ -15,7 +17,7 @@
 
 Name:           SLOF
 Version:        %{gittagdate}
-Release:        3.git%{gittagcommit}%{?dist}
+Release:        4.git%{gittagcommit}%{?dist}
 Summary:        Slimline Open Firmware
 
 License:        BSD
@@ -84,6 +86,10 @@ install -c -m 0644 boot_rom.bin %{buildroot}%{_datadir}/%{targetdir}/slof.bin
 
 
 %changelog
+* Fri Jan 21 2022 Richard W.M. Jones <rjones@redhat.com> - 20210217-4.git33a7322d
+- Unbreak build by undefining _auto_set_build_flags
+  See: https://fedoraproject.org/wiki/Changes/SetBuildFlagsBuildCheck
+
 * Wed Jan 19 2022 Fedora Release Engineering <releng@fedoraproject.org> - 20210217-3.git33a7322d
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild