diff --git a/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince.yaml b/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince.yaml
index 499290c568ea6e6af3abffe81020d869309440a3..6fbc8e4698e6af8e7720eb7bebab895fed7d7dae 100644
--- a/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince.yaml
+++ b/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince.yaml
@@ -7,9 +7,6 @@ queues:
 
 nodes:
   petitprince-[1-16]:
-    chassis:
-      manufacturer: Dell Inc.
-      name: PowerEdge M620
     processor:
       microarchitecture: Sandy Bridge
     performance:
@@ -27,7 +24,6 @@ nodes:
         interface: SATA
         driver: ahci
         storage: HDD
-        vendor: SEAGATE
     network_adapters:
       eth0:
         enabled: true
diff --git a/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince_extra.yaml b/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince_extra.yaml
index 16dcf38fc1062e1ad5386ac857aabf2c88986a96..48b35f9404e8d9b96035e7960dc6a650f60c0769 100644
--- a/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince_extra.yaml
+++ b/input/grid5000/sites/luxembourg/clusters/petitprince/petitprince_extra.yaml
@@ -1,8 +1,6 @@
 ---
 nodes:
   petitprince-1:
-    chassis:
-      serial: 1NVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/1
@@ -11,8 +9,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-2:
-    chassis:
-      serial: 2MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/2
@@ -21,8 +17,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-3:
-    chassis:
-      serial: 3MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/3
@@ -31,8 +25,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-4:
-    chassis:
-      serial: 4MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/4
@@ -41,8 +33,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-5:
-    chassis:
-      serial: 5MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/5
@@ -51,8 +41,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-6:
-    chassis:
-      serial: 6MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/6
@@ -61,8 +49,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-7:
-    chassis:
-      serial: 7MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/7
@@ -71,8 +57,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-8:
-    chassis:
-      serial: 8MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/8
@@ -81,8 +65,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-9:
-    chassis:
-      serial: 9MVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/9
@@ -91,8 +73,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-10:
-    chassis:
-      serial: BMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/10
@@ -101,8 +81,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-11:
-    chassis:
-      serial: CMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/11
@@ -111,8 +89,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-12:
-    chassis:
-      serial: DMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/12
@@ -121,8 +97,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-13:
-    chassis:
-      serial: FMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/13
@@ -131,8 +105,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-14:
-    chassis:
-      serial: GMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/14
@@ -141,8 +113,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-15:
-    chassis:
-      serial: HMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/15
@@ -151,8 +121,6 @@ nodes:
       bmc:
         switch_port: Gi2/36
   petitprince-16:
-    chassis:
-      serial: JMVTG5J
     network_adapters:
       eth0:
         switch_port: Te0/16