diff --git a/perl/DXProt.pm b/perl/DXProt.pm
index 023daa33..d6ea6917 100644
--- a/perl/DXProt.pm
+++ b/perl/DXProt.pm
@@ -1044,8 +1044,8 @@ sub normal
 									shift @{$tochan->{pingtime}} if @{$tochan->{pingtime}} > 6;
 
 									# cope with a missed ping, this means you must set the pingint large enough
-									my $miss = ($nopings-$tochan->{nopings}) * $tochan->{pingint}; 
-									if ($tochan->is_arcluster && $t > $miss  && $t < $miss + $tochan->{nopings} ) {
+									my $miss = ($nopings-$tochan->{nopings}+1) * $tochan->{pingint}; 
+									if ($tochan->is_arcluster && $miss > 0 && $t > $miss  && $t < $miss + $tochan->{nopings} ) {
 										$t -= $miss;
 									}