diff --git a/install/migrations/update_11.0.3_to_11.0.5/entities.php b/install/migrations/update_11.0.3_to_11.0.5/entities.php
index 40bd1ffa909..68e479621ea 100644
--- a/install/migrations/update_11.0.3_to_11.0.5/entities.php
+++ b/install/migrations/update_11.0.3_to_11.0.5/entities.php
@@ -43,8 +43,10 @@
 // Fix glpi_entities.id column to use AUTO_INCREMENT instead of DEFAULT 0
 // This is required for concurrent entity creation to work properly
 // see #22625
-// Add NO_AUTO_VALUE_ON_ZERO to allow operations on entities with id=0 (root entity)
-$DB->doQuery("SET SESSION sql_mode = CONCAT(@@sql_mode, ',NO_AUTO_VALUE_ON_ZERO')");
+// Add NO_AUTO_VALUE_ON_ZERO to allow operations on entities with id=0 (root entity).
+// Use IF() to handle the case where @@sql_mode is empty, as CONCAT would produce a
+// malformed string starting with a comma, causing the SET SESSION to fail silently.
+$DB->doQuery("SET SESSION sql_mode = IF(@@sql_mode = '', 'NO_AUTO_VALUE_ON_ZERO', CONCAT(@@sql_mode, ',NO_AUTO_VALUE_ON_ZERO'))");
 $DB->doQuery(
     "ALTER TABLE `glpi_entities`
      MODIFY `id` INT unsigned NOT NULL AUTO_INCREMENT"