diff --git a/vsftpd.spec b/vsftpd.spec
index a5046ec..010b62b 100644
--- a/vsftpd.spec
+++ b/vsftpd.spec
@@ -211,7 +211,7 @@ install -D -m 644 %{name}.8 %{buildroot}/%{_mandir}/man8/%{name}.8
 %if %{with_systemd}
 ln -sf service %{buildroot}/%{_sbindir}/rc%{name}
 install -D -m 0644 %{SOURCE7} %{buildroot}/%{_unitdir}/%{name}.service
-%if 0%{?sle_version} < 150300
+%if 0%{?sle_version} && 0%{?sle_version} < 150300
 sed -r -i '/^(Protect(Home|Hostname|KernelLogs|Clock|KernelTunables|KernelModules|ControlGroups)|RestrictRealtime|PrivateMounts)=/d' %{buildroot}/%{_unitdir}/%{name}.service
 %endif
 install -D -m 0644 %{SOURCE8} %{buildroot}/%{_unitdir}/%{name}@.service