diff --git a/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml b/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
index 7f416cd7efe39e1b2ea407377b6e8057c56ad840..b00ec018af247200f82f9ce838e8214bb594cfa3 100644
--- a/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
+++ b/input/grid5000/sites/nancy/clusters/graphene/graphene_extra.yaml
@@ -608,7 +608,7 @@ nodes:
         switch_port: 1/0/39
     pdu:
       - uid: graphene-pdu4
-        port: 5
+        port: 6
   graphene-55:
     network_adapters:
       eth0:
@@ -619,7 +619,7 @@ nodes:
         switch_port: 1/0/40
     pdu:
       - uid: graphene-pdu4
-        port: 6
+        port: 7
   graphene-56:
     network_adapters:
       eth0: