diff --git a/rpm/kernel-source.spec.in b/rpm/kernel-source.spec.in
index c487fe1..24c3884 100644
--- a/rpm/kernel-source.spec.in
+++ b/rpm/kernel-source.spec.in
@@ -26,6 +26,11 @@
 
 %define src_install_dir usr/src/linux-%kernelrelease%variant
 
+# if undefined use legacy location of before SLE15
+%if %{undefined _rpmmacrodir}
+%define _rpmmacrodir /etc/rpm
+%endif
+
 Name:           kernel-source@VARIANT@
 Summary:        The Linux Kernel Sources
 License:        GPL-2.0-only
@@ -243,9 +248,9 @@ cp %_sourcedir/README.SUSE %_sourcedir/config-options.changes.txt %buildroot/$DO
 ln -s $DOC/README.SUSE %buildroot/%src_install_dir/
 
 %if "%variant" == ""
-install -m 755 -d $RPM_BUILD_ROOT/etc/rpm
-install -m 644 %_sourcedir/macros.kernel-source $RPM_BUILD_ROOT/etc/rpm/
-echo "%%kernel_module_directory %{kernel_module_directory}" >> $RPM_BUILD_ROOT/etc/rpm/macros.kernel-source
+install -m 755 -d $RPM_BUILD_ROOT%{_rpmmacrodir}
+install -m 644 %_sourcedir/macros.kernel-source $RPM_BUILD_ROOT%{_rpmmacrodir}
+echo "%%kernel_module_directory %{kernel_module_directory}" >> $RPM_BUILD_ROOT%{_rpmmacrodir}/macros.kernel-source
 
 install -m 755 -d $RPM_BUILD_ROOT/usr/lib/rpm
 install -m 644 %_sourcedir/kernel-{module,cert}-subpackage \
@@ -298,7 +303,7 @@ relink linux-%kernelrelease%variant /usr/src/linux%variant
 %if "%variant" == ""
 %files -n kernel-macros
 %defattr(-,root,root)
-/etc/rpm/macros.kernel-source
+%{_rpmmacrodir}/macros.kernel-source
 /usr/lib/rpm/kernel-*-subpackage
 %dir /usr/lib/rpm/kernel
 /usr/lib/rpm/kernel/*