diff --git a/net-mgmt/nagios/Makefile b/net-mgmt/nagios/Makefile
index c40c390..b25fa33 100644
--- a/net-mgmt/nagios/Makefile
+++ b/net-mgmt/nagios/Makefile
@@ -91,11 +91,11 @@ EMBEDDED_PERL_CONFIGURE_WITH=	perlcache
 NANOSLEEP_CONFIGURE_ENABLE=	nanosleep
 EVENT_BROKER_CONFIGURE_ENABLE=	event-broker
 
-.if ${FLAVOR} == monplugins
+.if ${FLAVOR:U} == monplugins
 OPTIONS_DEFAULT+=	MONPLUGINS
 .endif
 
-.if ${FLAVOR} == default
+.if ${FLAVOR:U} == default
 OPTIONS_DEFAULT+=	NAGPLUGINS
 .endif