diff --git a/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-1.json b/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-1.json
index c8ddad7a35aeecad914f7ec197503e38e7f260ee..3ec187a1d537c630da706ca2b3d85fb8e9df4f3b 100644
--- a/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-1.json
+++ b/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-1.json
@@ -338,11 +338,11 @@
   },
   "pdu": [
     {
-      "port": 1,
+      "port": 0,
       "uid": "wattmetre2"
     },
     {
-      "port": 2,
+      "port": 1,
       "uid": "wattmetre2"
     }
   ],
diff --git a/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-2.json b/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-2.json
index 543bf832c2326097bf2cb2a87185724dff97aeee..ff4996c1deee5775804f9c37f49a0ab8fc952a1a 100644
--- a/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-2.json
+++ b/data/grid5000/sites/grenoble/clusters/servan/nodes/servan-2.json
@@ -338,11 +338,11 @@
   },
   "pdu": [
     {
-      "port": 3,
+      "port": 2,
       "uid": "wattmetre2"
     },
     {
-      "port": 4,
+      "port": 3,
       "uid": "wattmetre2"
     }
   ],
diff --git a/data/grid5000/sites/grenoble/pdus/wattmetre2.json b/data/grid5000/sites/grenoble/pdus/wattmetre2.json
index 7125126af2a96461f36c9e6fc67e7bf98458f92b..1f516341693823913ac0f2375dc594305de840d5 100644
--- a/data/grid5000/sites/grenoble/pdus/wattmetre2.json
+++ b/data/grid5000/sites/grenoble/pdus/wattmetre2.json
@@ -13,10 +13,10 @@
   ],
   "model": "",
   "ports": {
+    "0": "servan-1",
     "1": "servan-1",
-    "2": "servan-1",
-    "3": "servan-2",
-    "4": "servan-2"
+    "2": "servan-2",
+    "3": "servan-2"
   },
   "type": "pdu",
   "uid": "wattmetre2",
diff --git a/input/grid5000/sites/grenoble/clusters/servan/servan_pdu.yaml b/input/grid5000/sites/grenoble/clusters/servan/servan_pdu.yaml
index 2d45ea61a8d5eeb8c1957383e0d76fe7f147f30c..17b20160a9aa6d13a7574f8eb7edf280e9cff7c3 100644
--- a/input/grid5000/sites/grenoble/clusters/servan/servan_pdu.yaml
+++ b/input/grid5000/sites/grenoble/clusters/servan/servan_pdu.yaml
@@ -3,12 +3,12 @@ nodes:
   servan-1:
     pdu:
       - uid: wattmetre2
-        port: 1
+        port: 0
       - uid: wattmetre2
-        port: 2
+        port: 1
   servan-2:
     pdu:
       - uid: wattmetre2
-        port: 3
+        port: 2
       - uid: wattmetre2
-        port: 4
+        port: 3