diff --git a/wireless-regdb.spec b/wireless-regdb.spec
index e99a306..2d10f03 100644
--- a/wireless-regdb.spec
+++ b/wireless-regdb.spec
@@ -2,7 +2,7 @@
 
 Name:           wireless-regdb
 Version:        2018.05.31
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Regulatory database for 802.11 wireless networking
 
 Group:          System Environment/Base
@@ -14,6 +14,8 @@ Requires:       udev, iw
 Requires:       systemd >= 190
 Requires:       kernel >= 4.15
 
+BuildRequires:  systemd-devel
+
 # Temporarily disable Provides so as to prevent unintended upgrades
 #Provides:       crda = 3.18_2018.05.31-3
 Obsoletes:      crda <= 3.18_2018.05.31-2
@@ -64,5 +66,8 @@ install -D -pm 0644 %SOURCE3 %{buildroot}%{_udevrulesdir}/85-regulatory.rules
 
 
 %changelog
+* Fri Jul 06 2018 John W. Linville <linville@redhat.com> - 2018.05.31-2
+- Add BuildRequire for systemd-devel to provide _udevrulesdir definition
+
 * Fri Jul 06 2018 John W. Linville <linville@redhat.com> - 2018.05.31-1
 - Initial build