diff --git a/data/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.json b/data/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.json
index 538259f04d5a3d0aa47357b920366f687b8748de..d6c438dce8b8d997de261e014b671c05a1187998 100644
--- a/data/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.json
+++ b/data/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.json
@@ -128,7 +128,7 @@
       "interface": "Ethernet",
       "ip": "172.16.72.12",
       "kavlan": true,
-      "mac": "24:6e:96:03:0f:c8",
+      "mac": "24:6e:96:bd:52:b8",
       "management": false,
       "model": "82599ES 10-Gigabit SFI/SFP+ Network Connection",
       "mountable": true,
@@ -148,7 +148,7 @@
       "firmware_version": "0x8000095c",
       "interface": "Ethernet",
       "kavlan": true,
-      "mac": "24:6e:96:03:0f:ca",
+      "mac": "24:6e:96:bd:52:ba",
       "management": false,
       "model": "82599ES 10-Gigabit SFI/SFP+ Network Connection",
       "mountable": true,
diff --git a/input/grid5000/sites/nancy/clusters/grisou/grisou.yaml.erb b/input/grid5000/sites/nancy/clusters/grisou/grisou.yaml.erb
index c0f3d7261e8747294ac82b030507be6c45d98043..7ccbcbbc0b2b0e35f6ecebb3c461e7bbb0e61f8e 100644
--- a/input/grid5000/sites/nancy/clusters/grisou/grisou.yaml.erb
+++ b/input/grid5000/sites/nancy/clusters/grisou/grisou.yaml.erb
@@ -17,7 +17,7 @@ nodes:
                     24:6e:96:02:97:a8
                     24:6e:96:03:0a:38
                     24:6e:96:03:0e:b8
-                    24:6e:96:03:0f:c8
+                    24:6e:96:bd:52:b8
                     24:6e:96:03:11:90
                     24:6e:96:02:a3:e0
                     24:6e:96:02:9f:08
diff --git a/input/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.yaml b/input/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.yaml
index 6763d37a2b53a30ffa7b364d6479a8eca420cc47..90c261d37c3694b1f909d411a8ce3cf721340dcb 100644
--- a/input/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.yaml
+++ b/input/grid5000/sites/nancy/clusters/grisou/nodes/grisou-12.yaml
@@ -26,7 +26,7 @@ grisou-12:
       firmware_version: '0x8000095c'
       interface: Ethernet
       ip: 172.16.72.12
-      mac: 24:6e:96:03:0f:c8
+      mac: 24:6e:96:bd:52:b8
       management: false
       model: 82599ES 10-Gigabit SFI/SFP+ Network Connection
       name: eno1
@@ -36,7 +36,7 @@ grisou-12:
       driver: ixgbe
       firmware_version: '0x8000095c'
       interface: Ethernet
-      mac: 24:6e:96:03:0f:ca
+      mac: 24:6e:96:bd:52:ba
       management: false
       model: 82599ES 10-Gigabit SFI/SFP+ Network Connection
       name: eno2