diff -Nur qpsmtpd-0.96/lib/Qpsmtpd.pm qpsmtpd-0.96_bz9460/lib/Qpsmtpd.pm
--- qpsmtpd-0.96/lib/Qpsmtpd.pm	2016-02-16 23:52:02.000000000 +0100
+++ qpsmtpd-0.96_bz9460/lib/Qpsmtpd.pm	2016-05-16 11:52:07.041152848 +0200
@@ -448,7 +448,7 @@
 sub address {
     my $self = shift;
     my $addr = Qpsmtpd::Address->new(@_);
-    $addr->qp($self);
+    $addr->qp($self) if $addr;
     return $addr;
 }