diff --git a/plugins/dnsbl b/plugins/dnsbl
index 7c869ee..4a055fc 100644
--- a/plugins/dnsbl
+++ b/plugins/dnsbl
@@ -191,6 +191,8 @@ sub hook_connect {
 
             next if ! $result;
 
+            $self->adjust_karma( -1 );
+
             if ( ! $dnsbl ) { ($dnsbl) = ($result =~ m/(?:\d+\.){4}(.*)/); };
             if ( ! $dnsbl ) {  $dnsbl = $result; };