diff --git a/data/grid5000/sites/rennes/clusters/abacus18/nodes/abacus18-1.json b/data/grid5000/sites/rennes/clusters/abacus18/nodes/abacus18-1.json
index 0ea2b8a31abf3e7629104db9585729791143d73a..9780aa4dabc2184a85592f3756189a80dec79c48 100644
--- a/data/grid5000/sites/rennes/clusters/abacus18/nodes/abacus18-1.json
+++ b/data/grid5000/sites/rennes/clusters/abacus18/nodes/abacus18-1.json
@@ -66,7 +66,7 @@
   "storage_devices": [
     {
       "by_id": "",
-      "by_path": "/dev/disk/by-path/dummy",
+      "by_path": "/dev/disk/by-path/pci-0000:41:00.0-ata-1",
       "id": "disk0",
       "interface": "SATA",
       "model": "unknown",
diff --git a/input/grid5000/sites/rennes/clusters/abacus18/abacus18.yaml b/input/grid5000/sites/rennes/clusters/abacus18/abacus18.yaml
index d64347f11b5cf16d7957429f02135f769d674366..6af1886763e8c2fc870fdab4ca1121d32650eb3e 100644
--- a/input/grid5000/sites/rennes/clusters/abacus18/abacus18.yaml
+++ b/input/grid5000/sites/rennes/clusters/abacus18/abacus18.yaml
@@ -51,7 +51,7 @@ nodes:
         interface: SATA
         storage: SSD
         model: unknown
-        by_path: "/dev/disk/by-path/dummy"
+        by_path: "/dev/disk/by-path/pci-0000:41:00.0-ata-1"
       disk1:
         id: disk1
         interface: SATA