diff --git a/roles/prometheus/templates/prometheus/alert.rules.yml.j2 b/roles/prometheus/templates/prometheus/alert.rules.yml.j2
index 4443b364..210eb780 100644
--- a/roles/prometheus/templates/prometheus/alert.rules.yml.j2
+++ b/roles/prometheus/templates/prometheus/alert.rules.yml.j2
@@ -44,7 +44,7 @@ groups:
 
   # Alert for high CPU usage
   - alert: CpuBusy
-    expr: node_load5 > 5
+    expr: node_load5{instance="zbee.adm.crans.org"} > 7 or node_load5{instance!="zbee.adm.crans.org"} > 5
     for: 10m
     labels:
       severity: warning