diff --git a/data/grid5000/sites/rennes/clusters/abacus22/abacus22.json b/data/grid5000/sites/rennes/clusters/abacus22/abacus22.json
index 87b348584c9547dde06ed311c4c1d74343d1c27e..5c0abcfa6cb4dc8046f2cf723729b3de1914ca3c 100644
--- a/data/grid5000/sites/rennes/clusters/abacus22/abacus22.json
+++ b/data/grid5000/sites/rennes/clusters/abacus22/abacus22.json
@@ -1,5 +1,5 @@
 {
-  "boot_type": "bios",
+  "boot_type": "uefi",
   "created_at": "Mon, 04 Dec 2023 00:00:00 GMT",
   "exotic": false,
   "kavlan": false,
diff --git a/input/grid5000/sites/rennes/clusters/abacus22/abacus22.yaml b/input/grid5000/sites/rennes/clusters/abacus22/abacus22.yaml
index 5ffb5b5569e6289805f62e885a61921fb05b695c..c938b4894a1d5e89bd732653798c6843666381b3 100644
--- a/input/grid5000/sites/rennes/clusters/abacus22/abacus22.yaml
+++ b/input/grid5000/sites/rennes/clusters/abacus22/abacus22.yaml
@@ -1,7 +1,7 @@
 model: Dell PowerEdge C6320
 created_at: 2023-12-04
 kavlan: false
-boot_type: bios
+boot_type: uefi
 exotic: false
 queues:
   - admin