diff --git a/src/deb/for-download/tools/patches/exim_forwarding.patch b/src/deb/for-download/tools/patches/exim_forwarding.patch
index 1fa6d408..dcefe327 100644
--- a/src/deb/for-download/tools/patches/exim_forwarding.patch
+++ b/src/deb/for-download/tools/patches/exim_forwarding.patch
@@ -6,7 +6,7 @@
   
 +  warn    !authenticated = *
 +          hosts          = !+relay_from_hosts
-+          condition     = ${lookup{$local_part@$domain}lsearch{/etc/exim4/domains/$domain/aliases}{true}{false}}
++          condition     = ${lookup{$local_part@$domain}lsearch{/etc/exim4/domains/${lookup{$domain}dsearch{/etc/exim4/domains/}}/aliases}{true}{false}}
 +          set acl_m3    = yes
 +
    deny    message       = Restricted characters in address