diff --git a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-21.yaml b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-21.yaml
index bf9b65f4db2eaf2e5d8857dd3d8c001810592532..b1b63db88f52d494885853c0f288b9af0fa40fb0 100644
--- a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-21.yaml
+++ b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-21.yaml
@@ -11,7 +11,7 @@ dahu-21:
     release_date: '08/28/2020'
     vendor: Dell Inc.
     version: 2.8.2
-  bmc_version: '4.22.00.00'
+  bmc_version: 4.22.00.00
   chassis:
     manufacturer: Dell Inc.
     name: PowerEdge C6420
diff --git a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-26.yaml b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-26.yaml
index 5e1b0d17eed0060f025a3c73826fb824dfeeae87..260c6965fb0b2c4c0d11abf4e4116bd6d1566ac8 100644
--- a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-26.yaml
+++ b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-26.yaml
@@ -11,7 +11,7 @@ dahu-26:
     release_date: '08/28/2020'
     vendor: Dell Inc.
     version: 2.8.2
-  bmc_version: '4.22.00.00'
+  bmc_version: 4.22.00.00
   chassis:
     manufacturer: Dell Inc.
     name: PowerEdge C6420
diff --git a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-4.yaml b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-4.yaml
index 42c5c9af2f8698e429f6c3e210521bb21da2fa06..5cf1ec03d5d0c09a1802859da5fcfc8373a23535 100644
--- a/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-4.yaml
+++ b/input/grid5000/sites/grenoble/clusters/dahu/nodes/dahu-4.yaml
@@ -11,7 +11,7 @@ dahu-4:
     release_date: '08/28/2020'
     vendor: Dell Inc.
     version: 2.8.2
-  bmc_version: '4.22.00.00'
+  bmc_version: 4.22.00.00
   chassis:
     manufacturer: Dell Inc.
     name: PowerEdge C6420