diff --git a/plugins/senderbase/senderbase b/plugins/senderbase/senderbase
index cbfdb9a7..d00f5d18 100755
--- a/plugins/senderbase/senderbase
+++ b/plugins/senderbase/senderbase
@@ -51,8 +51,8 @@ graph_title SenderBase Reputation for $real_ip_address
 graph_info Current reputation from senderbase.org.  Ranges from -10 (very poor) through 0 (neutral) to 10 (very good).
 graph_args --lower-limit -10 --upper-limit 10
 reputation.label Reputation
-reputation.warning :0
-reputation.critical :-5
+reputation.warning 0:
+reputation.critical -5:
 EOF
     exit 0
 fi