diff --git a/data/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.json b/data/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.json
index 2d6ae0a43ee1565794de02da1d18ff769f90c6e1..f99edb7050f11ff9086e95a3301e5b9c6fdc9544 100644
--- a/data/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.json
+++ b/data/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.json
@@ -1,5 +1,5 @@
 {
-  "boot_type": "uefi",
+  "boot_type": "bios",
   "created_at": "Mon, 13 Jan 2025 00:00:00 GMT",
   "exotic": false,
   "kavlan": false,
diff --git a/input/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.yaml b/input/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.yaml
index a59360c6121893e7f1dcf7e83bae9eaf5e231ed8..0c829b84d8ec97ef6e04b87ed14e616065861664 100644
--- a/input/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.yaml
+++ b/input/grid5000/sites/grenoble/clusters/chartreuse2/chartreuse2.yaml
@@ -2,7 +2,7 @@
 model: Dell PowerEdge C6320
 created_at: 2025-01-13
 kavlan: false
-boot_type: uefi
+boot_type: bios
 exotic: false
 queues:
   - admin