diff --git a/postfix/entrypoint.sh b/postfix/entrypoint.sh
index cbadaaa..4383c60 100644
--- a/postfix/entrypoint.sh
+++ b/postfix/entrypoint.sh
@@ -5,10 +5,10 @@ for cf in /postfix-config/*.cf; do
 done
 
 for cf in /etc/postfix/*.cf; do
-  sed -iE -e 's/%DB_PASSWORD%/${DB_PASSWORD}/g' \
-          -e 's/%DB_HOST%/${DB_HOST}/g' \
-          -e 's/%DB_USER%/${DB_USER}/g' \
-          -e 's/%DB_DATABASE%/${DB_DATABASE}/g' ${cf};
+  sed -iE -e "s/%DB_PASSWORD%/${DB_PASSWORD}/g" \
+          -e "s/%DB_HOST%/${DB_HOST}/g" \
+          -e "s/%DB_USER%/${DB_USER}/g" \
+          -e "s/%DB_DATABASE%/${DB_DATABASE}/g" ${cf};
 done
 
 /usr/sbin/postfix start-fg