diff --git a/health/health.d/mdstat.conf b/health/health.d/mdstat.conf
index 3bf0e3fd6d..2f906e1874 100644
--- a/health/health.d/mdstat.conf
+++ b/health/health.d/mdstat.conf
@@ -21,8 +21,9 @@ template: mdstat_mismatch_cnt
       on: md.mismatch_cnt
    units: unsynchronized blocks
     calc: $count
-   every: 10s
-    crit: $this > 0
+   every: 60s
+    warn: $this > 1024
+   delay: up 30m
     info: Mismatch count!
       to: sysadmin