diff --git a/roles/base/files/postfix/main.cf/main.cf.mailman b/roles/base/files/postfix/main.cf/main.cf.mailman
index 2b718157d0..30003d2c62 100644
--- a/roles/base/files/postfix/main.cf/main.cf.mailman
+++ b/roles/base/files/postfix/main.cf/main.cf.mailman
@@ -696,5 +696,5 @@ local_recipient_maps = hash:/var/lib/mailman3/data/postfix_lmtp
 relay_domains = hash:/var/lib/mailman3/data/postfix_domains
 
 smtpd_sender_restrictions =
-	check_sender_access regex:/etc/postfix/sender_access
+	check_sender_access regexp:/etc/postfix/sender_access
 	permit
diff --git a/roles/base/files/postfix/main.cf/main.cf.smtp-mm b/roles/base/files/postfix/main.cf/main.cf.smtp-mm
index a1c0655bae..e72d39a40f 100644
--- a/roles/base/files/postfix/main.cf/main.cf.smtp-mm
+++ b/roles/base/files/postfix/main.cf/main.cf.smtp-mm
@@ -739,4 +739,4 @@ smtp_tls_key_file = /etc/pki/tls/private/gateway.key
 smtp_tls_CAfile  = /etc/pki/tls/certs/ca-bundle.crt
 
 # Deny email from some domains
-smtpd_sender_restrictions = regex:/etc/postfix/sender_access
+smtpd_sender_restrictions = regexp:/etc/postfix/sender_access