diff --git a/scripts/bootgraph.pl b/scripts/bootgraph.pl
index 12caa822a23..b78fca994a1 100644
--- a/scripts/bootgraph.pl
+++ b/scripts/bootgraph.pl
@@ -44,7 +44,7 @@ my %end;
 my %type;
 my $done = 0;
 my $maxtime = 0;
-my $firsttime = 100;
+my $firsttime = 99999;
 my $count = 0;
 my %pids;
 my %pidctr;