diff --git a/docker/.env.example b/docker/.env.example
index 05ec75d..a864cc8 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -1,5 +1,5 @@
 # Zitadel
-ZITADEL_MASTERKEY=a-32-character-masterkey-for-dev!
+ZITADEL_MASTERKEY=changeMe_must_be_exactly_32_char
 ZITADEL_DB_PASSWORD=zitadel-dev-password
 ZITADEL_ADMIN_PASSWORD=Admin1234!