diff --git a/data/grid5000/sites/lyon/clusters/gemini/gemini.json b/data/grid5000/sites/lyon/clusters/gemini/gemini.json
index 8a83b43755153898d12f7f60decec5cf42587abe..2e7aee82134ee1746e515f4887dc55484f93b5f7 100644
--- a/data/grid5000/sites/lyon/clusters/gemini/gemini.json
+++ b/data/grid5000/sites/lyon/clusters/gemini/gemini.json
@@ -835,7 +835,7 @@
     {
       "description": "Voltage of VR CPU2 reported by BMC, in volt",
       "labels": {
-        "voltage": "vr_cpu1"
+        "voltage": "vr_cpu2"
       },
       "name": "bmc_voltage_volt",
       "optional_period": 5000,
diff --git a/input/grid5000/sites/lyon/clusters/gemini/gemini_metrics.yaml b/input/grid5000/sites/lyon/clusters/gemini/gemini_metrics.yaml
index 92e887404285f5fb825ea6c343332b1c0189deb4..74ff9f93a28266fd7b122cfd1c9d1fb991639f7f 100644
--- a/input/grid5000/sites/lyon/clusters/gemini/gemini_metrics.yaml
+++ b/input/grid5000/sites/lyon/clusters/gemini/gemini_metrics.yaml
@@ -599,7 +599,7 @@ metrics:
     id: 136 #Volt_VR_CPU0
 
 - name: bmc_voltage_volt
-  labels: {"voltage": "vr_cpu1"}
+  labels: {"voltage": "vr_cpu2"}
   description: Voltage of VR CPU2 reported by BMC, in volt
   period: 0
   optional_period: 5000