diff --git a/install/debian/10/exim/exim4.conf.template b/install/debian/10/exim/exim4.conf.template
index 8fa12c2d..0e5afaac 100644
--- a/install/debian/10/exim/exim4.conf.template
+++ b/install/debian/10/exim/exim4.conf.template
@@ -11,7 +11,6 @@
 disable_ipv6=true
 add_environment=<; PATH=/bin:/usr/bin
 keep_environment=
-smtputf8_advertise_hosts =
 
 domainlist local_domains = dsearch;/etc/exim4/domains/
 domainlist relay_to_domains = dsearch;/etc/exim4/domains/
diff --git a/install/debian/11/exim/exim4.conf.template-RC b/install/debian/11/exim/exim4.conf.template-RC
index e5ba36ab..e16099bd 100644
--- a/install/debian/11/exim/exim4.conf.template-RC
+++ b/install/debian/11/exim/exim4.conf.template-RC
@@ -11,6 +11,7 @@
 disable_ipv6=true
 add_environment=<; PATH=/bin:/usr/bin
 keep_environment=
+smtputf8_advertise_hosts =
 
 #local_interfaces =  0.0.0.0
 #smtp_active_hostname = ${lookup{$interface_address}lsearch{/etc/exim4/virtual/helo_data}{$value}}
diff --git a/install/debian/9/exim/exim4.conf.template b/install/debian/9/exim/exim4.conf.template
index c9344903..261947d2 100644
--- a/install/debian/9/exim/exim4.conf.template
+++ b/install/debian/9/exim/exim4.conf.template
@@ -11,7 +11,6 @@
 disable_ipv6=true
 add_environment=<; PATH=/bin:/usr/bin
 keep_environment=
-smtputf8_advertise_hosts =
 
 domainlist local_domains = dsearch;/etc/exim4/domains/
 domainlist relay_to_domains = dsearch;/etc/exim4/domains/