diff --git a/Dockerfile b/Dockerfile
index 684c3edd..b3d4e5c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ ENV DEBIAN_FRONTEND noninteractive
 ENV VIRUSMAILS_DELETE_DELAY=7
 ENV ONE_DIR=0
 ENV ENABLE_POSTGREY=0
+ENV FETCHMAIL_POLL=300
 ENV POSTGREY_DELAY=300
 ENV POSTGREY_MAX_AGE=35
 ENV POSTGREY_TEXT="Delayed by postgrey"
diff --git a/target/start-mailserver.sh b/target/start-mailserver.sh
index 9c43d43a..f89eb967 100644
--- a/target/start-mailserver.sh
+++ b/target/start-mailserver.sh
@@ -13,6 +13,7 @@ DEFAULT_VARS["ENABLE_POP3"]="${ENABLE_POP3:="0"}"
 DEFAULT_VARS["ENABLE_FAIL2BAN"]="${ENABLE_FAIL2BAN:="0"}"
 DEFAULT_VARS["ENABLE_MANAGESIEVE"]="${ENABLE_MANAGESIEVE:="0"}"
 DEFAULT_VARS["ENABLE_FETCHMAIL"]="${ENABLE_FETCHMAIL:="0"}"
+DEFAULT_VARS["FETCHMAIL_POLL"]="${FETCHMAIL_POLL:="300"}"
 DEFAULT_VARS["ENABLE_LDAP"]="${ENABLE_LDAP:="0"}"
 DEFAULT_VARS["ENABLE_POSTGREY"]="${ENABLE_POSTGREY:="0"}"
 DEFAULT_VARS["POSTGREY_DELAY"]="${POSTGREY_DELAY:="300"}"
diff --git a/target/supervisor/conf.d/supervisor-app.conf b/target/supervisor/conf.d/supervisor-app.conf
index 4b196ca1..92441afc 100644
--- a/target/supervisor/conf.d/supervisor-app.conf
+++ b/target/supervisor/conf.d/supervisor-app.conf
@@ -104,7 +104,7 @@ autorestart=true
 stdout_logfile=/var/log/supervisor/%(program_name)s.log
 stderr_logfile=/var/log/supervisor/%(program_name)s.log
 user=fetchmail
-command=/usr/bin/fetchmail -f /etc/fetchmailrc -v --nodetach --daemon 300 -i /var/lib/fetchmail/.fetchmail-UIDL-cache --pidfile /var/run/fetchmail/fetchmail.pid
+command=/usr/bin/fetchmail -f /etc/fetchmailrc -v --nodetach --daemon %(ENV_FETCHMAIL_POLL)s -i /var/lib/fetchmail/.fetchmail-UIDL-cache --pidfile /var/run/fetchmail/fetchmail.pid
 
 [program:postfix]
 startsecs=0