diff --git a/build/run/installer.sh b/build/run/installer.sh
index 983a022..8f7771f 100755
--- a/build/run/installer.sh
+++ b/build/run/installer.sh
@@ -89,7 +89,7 @@ postconf -e "virtual_mailbox_limit = 0"
 postconf -e "smtp_header_checks = pcre:/etc/postfix/smtp_header_checks"
 
 # SPF and DKIM checks
-postconf -e "policy_time_limit = 3600"
+postconf -e "policyd-spf_time_limit = 3600"
 postconf -e "smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_client_access pcre:/etc/postfix/whitelisted_domains, check_sender_access lmdb:/etc/postfix/whitelisted_emails, check_client_access pcre:/etc/postfix/blacklisted_domains, check_sender_access lmdb:/etc/postfix/blacklisted_emails, check_policy_service unix:private/policyd-spf"
 
 # Milter configuration