diff --git a/.env.example b/.env.example
index abf2c980b2..729f564fc0 100644
--- a/.env.example
+++ b/.env.example
@@ -235,6 +235,13 @@ STATIC_CRON_TOKEN=
 # However if you know what you're doing you can significantly speed up container start times.
 # Set each value to true to enable, or false to disable.
 
+# Set this to true to build all locales supported by Firefly III.
+# This may take quite some time (several minutes) and is generally not recommended.
+# If you wish to change or alter the list of locales, start your Docker container with
+# `docker run -v locale.gen:/etc/locale.gen -e DKR_BUILD_LOCALE=true`
+# and make sure your preferred locales are in your own locale.gen.
+DKR_BUILD_LOCALE=false
+
 # Check if the SQLite database exists. Can be skipped if you're not using SQLite.
 # Won't significantly speed up things.
 DKR_CHECK_SQLITE=true