diff --git a/config/sql_login_configuration/sql_login.yaml b/config/sql_login_configuration/sql_login.yaml
index 5341fce..2a1d5c8 100644
--- a/config/sql_login_configuration/sql_login.yaml
+++ b/config/sql_login_configuration/sql_login.yaml
@@ -6,5 +6,4 @@ sql_login:
   data_to_fetch:
     - email
     - lastname
-    - firstname
-  subject_rewrite_expression: 'firstname~"."~lastname~"@exemple.com"'
\ No newline at end of file
+    - firstname
\ No newline at end of file