diff --git a/.env.example b/.env.example
index ac755def1..898aa7694 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,5 @@
 # Common params
 APP_ENV=local
-APP_DEBUG=false
 APP_CRON_ENABLED=true
 
 # Database credentials
diff --git a/library/defines.php b/library/defines.php
index ab80390ca..d29f6afd0 100644
--- a/library/defines.php
+++ b/library/defines.php
@@ -80,6 +80,7 @@ define('LOG_MAX_SIZE', 1048576); // bytes
 // Error reporting
 ini_set('error_reporting', E_ALL);
 ini_set('display_errors', 0);
+ini_set('display_startup_errors', 0);
 ini_set('log_errors', 1);
 ini_set('error_log', LOG_DIR . '/php_errors.log'); // path to log file enabled only if log_errors == 1 (native)
 define('WHOOPS_LOG_FILE', LOG_DIR . '/php_whoops.log'); // log file enabled only if log_errors == 1 (whoops)
diff --git a/library/includes/init_bb.php b/library/includes/init_bb.php
index f5ebd5887..83e0daa81 100644
--- a/library/includes/init_bb.php
+++ b/library/includes/init_bb.php
@@ -102,6 +102,7 @@ function bb_setcookie($name, $val, int $lifetime = COOKIE_PERSIST, bool $httponl
 if (DBG_USER) {
     ini_set('error_reporting', E_ALL);
     ini_set('display_errors', 1);
+    ini_set('display_startup_errors', 1);
 } else {
     unset($_COOKIE['explain']);
 }