diff --git a/src/CodeGenerator/src/Generator/GeneratorHelper.php b/src/CodeGenerator/src/Generator/GeneratorHelper.php
index 7d22ae9dc..d74d08ba5 100644
--- a/src/CodeGenerator/src/Generator/GeneratorHelper.php
+++ b/src/CodeGenerator/src/Generator/GeneratorHelper.php
@@ -42,6 +42,7 @@ public static function normalizeName(string $propertyName): string
             'KMS' => 'Kms',
             'ARN' => 'Arn',
             'VPC' => 'Vpc',
+            'STL' => 'Stl',
             'TTL' => 'Ttl',
             'DNS' => 'Dns',
             'MFA' => 'Mfa',