diff --git a/data/grid5000/sites/rennes/clusters/abacus14/nodes/abacus14-1.json b/data/grid5000/sites/rennes/clusters/abacus14/nodes/abacus14-1.json
index 99e167917494e3af360725a5c9e736806b2af6c9..f2284148db16bd6aad7bfdbca920bec9b176737c 100644
--- a/data/grid5000/sites/rennes/clusters/abacus14/nodes/abacus14-1.json
+++ b/data/grid5000/sites/rennes/clusters/abacus14/nodes/abacus14-1.json
@@ -236,7 +236,7 @@
     "clock_speed": 2650000000,
     "ht_capable": true,
     "instruction_set": "x86-64",
-    "microarchitecture": "Zen 3",
+    "microarchitecture": "Skylake",
     "microcode": "0x5003604",
     "model": "Intel Xeon",
     "other_description": "Intel(R) Xeon(R) Silver 4214 CPU @ 2.20GHz",
diff --git a/input/grid5000/sites/rennes/clusters/abacus14/abacus14.yaml b/input/grid5000/sites/rennes/clusters/abacus14/abacus14.yaml
index 7ab0f14b11c30c632be7157777d410a0dfd016bd..7531b8269229e5df3f58707e596c556263d63673 100644
--- a/input/grid5000/sites/rennes/clusters/abacus14/abacus14.yaml
+++ b/input/grid5000/sites/rennes/clusters/abacus14/abacus14.yaml
@@ -18,7 +18,7 @@ nodes:
       besteffort: true
       max_walltime: 86400
     processor:
-      microarchitecture: Zen 3
+      microarchitecture: Skylake
       clock_speed: 2650000000
     software:
       standard-environment: debian11-x64-std