1 files changed, 1 insertions, 1 deletions
diff --git a/munin-plugin b/munin-plugin
index 6f74e72..f0c111b 100755
--- a/munin-plugin
+++ b/munin-plugin
@@ -13,7 +13,7 @@ use SiteSummary;
 
 my %sitelabels;
 
-if (!defined $ARGV[0]) {
+if (!$ARGV[0]) {
     for_all_hosts(\&handle_host);
     # List values in the opposit order of the configuration order, to
     # try to get the same order on the graphs and the values.