diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 742391c34..c3d42d74e 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -874,6 +874,7 @@ matrix_postgres_enabled: true
 
 matrix_postgres_connection_hostname: "matrix-postgres"
 matrix_postgres_connection_username: "synapse"
+# Please note that max length of the password is 99 characters
 matrix_postgres_connection_password: "synapse-password"
 matrix_postgres_db_name: "homeserver"