diff --git a/scripts/zmdc.pl.in b/scripts/zmdc.pl.in
index b068b9a49..36d5e922a 100644
--- a/scripts/zmdc.pl.in
+++ b/scripts/zmdc.pl.in
@@ -862,7 +862,7 @@ sub killAll
     my $killall;
     if ( '@HOST_OS@' eq 'BSD' )
     {
-        $killall = 'killall -';
+        $killall = 'killall -q -';
     } elsif ( '@HOST_OS@' eq 'solaris' ) {
         $killall = 'pkill -';
     } else {