diff --git a/data/grid5000/sites/rennes/clusters/abacus15/nodes/abacus15-1.json b/data/grid5000/sites/rennes/clusters/abacus15/nodes/abacus15-1.json
index b18bb15afacbf9b4e9e7c249a50aad846ee854ab..da522917a8a95a375d8f85bce918179786d8dea7 100644
--- a/data/grid5000/sites/rennes/clusters/abacus15/nodes/abacus15-1.json
+++ b/data/grid5000/sites/rennes/clusters/abacus15/nodes/abacus15-1.json
@@ -273,6 +273,7 @@
   "supported_job_types": {
     "besteffort": true,
     "deploy": true,
+    "max_walltime": 0,
     "queues": [
       "testing",
       "admin"
diff --git a/input/grid5000/sites/rennes/clusters/abacus15/abacus15.yaml b/input/grid5000/sites/rennes/clusters/abacus15/abacus15.yaml
index e3ffa31d1057f6cba9194e2188777a1251ce8963..fe5731a6186d716e3d4b4cab8cb4dfbb5eb8e08b 100644
--- a/input/grid5000/sites/rennes/clusters/abacus15/abacus15.yaml
+++ b/input/grid5000/sites/rennes/clusters/abacus15/abacus15.yaml
@@ -11,6 +11,7 @@ nodes:
     supported_job_types:
       deploy: true
       besteffort: true
+      max_walltime: 0
     processor:
       microarchitecture: Zen 3
       clock_speed: 2650000000