diff --git a/stacks/lail-apps/paheko/docker-compose.yaml b/stacks/lail-apps/paheko/docker-compose.yaml
index 7174354..eeab1b7 100644
--- a/stacks/lail-apps/paheko/docker-compose.yaml
+++ b/stacks/lail-apps/paheko/docker-compose.yaml
@@ -12,25 +12,25 @@ services:
           <?php
             const SHOW_ERRORS = false;
             const SQLITE_JOURNAL_MODE = 'WAL';
-            const OIDC_CLIENT_BUTTON = $PAHEKO_OIDC_CLIENT_BUTTON ?: 'Se connecter avec le SSO LAIL';
-            const OIDC_CLIENT_URL = $PAHEKO_OIDC_CLIENT_URL ?: null;
-            const OIDC_CLIENT_ID = $PAHEKO_OIDC_CLIENT_ID ?: null;
-            const OIDC_CLIENT_SECRET = $PAHEKO_OIDC_CLIENT_SECRET ?: null;
+            const OIDC_CLIENT_BUTTON = '${PAHEKO_OIDC_CLIENT_BUTTON}' ?: 'Se connecter avec le SSO LAIL';
+            const OIDC_CLIENT_URL = '${PAHEKO_OIDC_CLIENT_URL}';
+            const OIDC_CLIENT_ID = '${PAHEKO_OIDC_CLIENT_ID}';
+            const OIDC_CLIENT_SECRET = '${PAHEKO_OIDC_CLIENT_SECRET}';
             const OIDC_CLIENT_MATCH_EMAIL = true;
-            const SMTP_HOST = $PAHEKO_SMTP_HOST ?: null;
-            const SMTP_PORT = $PAHEKO_SMTP_PORT ? (int) $PAHEKO_SMTP_PORT : 587;
-            const SMTP_USER = $PAHEKO_SMTP_USER ?: null;
-            const SMTP_PASSWORD = $PAHEKO_SMTP_PASSWORD ?: null;
-            const SMTP_SECURITY = $PAHEKO_SMTP_SECURITY ?: 'STARTTLS';
-            const SMTP_HELO_HOSTNAME = $PAHEKO_SMTP_HELO_HOSTNAME ?: null;
-            const MAIL_RETURN_PATH = $PAHEKO_MAIL_RETURN_PATH ?: null;
-            const MAIL_SENDER = $PAHEKO_MAIL_SENDER ?: null;
+            const SMTP_HOST = '${PAHEKO_SMTP_HOST}';
+            const SMTP_PORT = ${PAHEKO_SMTP_PORT};
+            const SMTP_USER = '${PAHEKO_SMTP_USER}';
+            const SMTP_PASSWORD = '${PAHEKO_SMTP_PASSWORD}';
+            const SMTP_SECURITY = '${PAHEKO_SMTP_SECURITY} ';
+            const SMTP_HELO_HOSTNAME = '${PAHEKO_SMTP_HELO_HOSTNAME}';
+            const MAIL_RETURN_PATH = '${PAHEKO_MAIL_RETURN_PATH}';
+            const MAIL_SENDER = '${PAHEKO_MAIL_SENDER}';
             const DATA_ROOT = '/var/www/paheko/data';
-            const WOPI_DISCOVERY_URL = $PAHEKO_WOPI_DISCOVERY_URL ?: null;
+            const WOPI_DISCOVERY_URL = '${PAHEKO_WOPI_DISCOVERY_URL}';
             const CONVERSION_TOOLS = ['collabora'];
-            const API_USER = $PAHEKO_API_USER ?: null;
-            const API_PASSWORD = $PAHEKO_API_PASSWORD ?: null;
-            const LEGAL_HOSTING_DETAILS = $PAHEKO_LEGAL_HOSTING_DETAILS;
+            const API_USER = '${PAHEKO_API_USER}';
+            const API_PASSWORD = '${PAHEKO_API_PASSWORD}';
+            const LEGAL_HOSTING_DETAILS = '${PAHEKO_LEGAL_HOSTING_DETAILS}';
             const DISABLE_INSTALL_PING = true;
             const ENABLE_UPGRADES = false;
     healthcheck: