diff --git a/check_updates/nagios-okplugin-check_updates.spec b/check_updates/nagios-okplugin-check_updates.spec
index b6242c7..267f73b 100644
--- a/check_updates/nagios-okplugin-check_updates.spec
+++ b/check_updates/nagios-okplugin-check_updates.spec
@@ -15,6 +15,7 @@ BuildArch:	noarch
 Requires:	nrpe
 Requires:	pynag
 Requires:	PackageKit
+Conflicts:	nagios-okplugin-check_yum
 
 
 %description