diff --git a/data/PVE/Cluster.pm b/data/PVE/Cluster.pm
index f679693..e9a84b5 100644
--- a/data/PVE/Cluster.pm
+++ b/data/PVE/Cluster.pm
@@ -699,6 +699,7 @@ sub create_rrd_graph {
 	"--width" => 800,
 	"--start" => - $reso*$count,
 	"--end" => 'now' ,
+	"--lower-limit" => 0,
 	);
 
     my $socket = "/var/run/rrdcached.sock";