diff --git a/coreos-config/roles/compose_project/templates/prometheus/rules/node.yaml b/coreos-config/roles/compose_project/templates/prometheus/rules/node.yaml
index 5066531..f49bfce 100644
--- a/coreos-config/roles/compose_project/templates/prometheus/rules/node.yaml
+++ b/coreos-config/roles/compose_project/templates/prometheus/rules/node.yaml
@@ -132,13 +132,13 @@ groups:
         summary: Host CPU steal noisy neighbor (instance {{ $labels.instance }})
         description: "CPU steal is > 10%. A noisy neighbor is killing VM performances or a spot instance may be out of credit.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
     - alert: HostCpuHighIowait
-      expr: 'avg by (instance) (rate(node_cpu_seconds_total{mode="iowait"}[5m])) * 100 > 10'
+      expr: 'avg by (instance) (rate(node_cpu_seconds_total{mode="iowait"}[5m])) * 100 > 15'
       for: 0m
       labels:
         severity: warning
       annotations:
         summary: Host CPU high iowait (instance {{ $labels.instance }})
-        description: "CPU iowait > 10%. A high iowait means that you are disk or network bound.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+        description: "CPU iowait > 15%. A high iowait means that you are disk or network bound.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
     - alert: HostUnusualDiskIo
       expr: 'rate(node_disk_io_time_seconds_total[1m]) > 0.5'
       for: 5m