diff --git a/rust-zram-generator.spec b/rust-zram-generator.spec
index fd76c8d..8f34ce6 100644
--- a/rust-zram-generator.spec
+++ b/rust-zram-generator.spec
@@ -97,17 +97,16 @@ cp -a %{S:1} .
 %cargo_generate_buildrequires
 echo '/usr/bin/make'
 echo '/usr/bin/ronn'
-echo 'pkgconfig(systemd)'
 echo 'systemd-rpm-macros'
 
 %build
-export SYSTEMD_UTIL_DIR=$(pkg-config --variable=systemdutildir systemd)
+export SYSTEMD_UTIL_DIR=%{_systemd_util_dir}
 %cargo_build
 make systemd_service
 LC_ALL=C.UTF-8 ronn --roff --organization="zram-generator %{version_no_tilde}" man/*.md
 
 %install
-export SYSTEMD_UTIL_DIR=$(pkg-config --variable=systemdutildir systemd)
+export SYSTEMD_UTIL_DIR=%{_systemd_util_dir}
 %cargo_install
 
 mkdir -p %{buildroot}%{_systemdgeneratordir}
@@ -119,7 +118,7 @@ install -Dpm0644 -t %{buildroot}%{_mandir}/man5 man/zram-generator.conf.5
 
 %if %{with check}
 %check
-export SYSTEMD_UTIL_DIR=$(pkg-config --variable=systemdutildir systemd)
+export SYSTEMD_UTIL_DIR=%{_systemd_util_dir}
 %cargo_test
 %endif