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-rw-r--r--lib/Smokeping.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Smokeping.pm b/lib/Smokeping.pm
index 3016f07..8462307 100644
--- a/lib/Smokeping.pm
+++ b/lib/Smokeping.pm
@@ -1107,7 +1107,7 @@ sub update_rrds($$$$$) {
next;
};
my $prevmatch = $tree->{prevmatch}{$_} || 0;
- my $match = &{$cfg->{Alerts}{$_}{sub}}($x);
+ my $match = &{$cfg->{Alerts}{$_}{sub}}($x) || 0; # Avgratio returns undef
my $edgetrigger = $cfg->{Alerts}{$_}{edgetrigger} eq 'yes';
my $what;
if ($edgetrigger and $prevmatch != $match) {