diff --git a/beep.spec b/beep.spec
index 9b35454..20a8a40 100644
--- a/beep.spec
+++ b/beep.spec
@@ -65,7 +65,7 @@ Requires(pre):  shadow-utils
 # /etc/modprobe.d/
 Requires:       kmod
 # /etc/udev/rules.d/  and  /usr/lib/udev/rules.d/
-%if 0%{?rhel} <= 7
+%if %{defined el7}
 Requires:       systemd
 %else
 Requires:       systemd-udev