diff --git a/lib/constructs/backup-verification.ts b/lib/constructs/backup-verification.ts
index a94e347..b9e9935 100644
--- a/lib/constructs/backup-verification.ts
+++ b/lib/constructs/backup-verification.ts
@@ -99,16 +99,38 @@ export class BackupVerification extends Construct {
       ],
     });
 
+    // Errors alarm: only fires when the function actually runs and errors.
+    // The function runs once daily, so for ~23h there is no data. Treating
+    // missing data as BREACHING flipped this alarm OK->ALARM every day around
+    // 11:01 UTC even though no error ever occurred. NOT_BREACHING means "no
+    // data = no errors = healthy"; the separate not-running alarm below covers
+    // the "verification never ran" case.
     new cloudwatch.Alarm(this, "ErrorAlarm", {
       alarmName: "forgejo-backup-verification-errors",
       alarmDescription: "Backup verification Lambda is failing — Slack notifications may not be firing",
       metric: fn.metricErrors({ period: cdk.Duration.hours(1) }),
       threshold: 1,
       evaluationPeriods: 1,
-      treatMissingData: cloudwatch.TreatMissingData.BREACHING,
+      treatMissingData: cloudwatch.TreatMissingData.NOT_BREACHING,
       comparisonOperator: cloudwatch.ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD,
     });
 
+    // Not-running alarm: fires if the daily verification did not invoke at all
+    // in a 24h window. This is the real "missing run" guard that the errors
+    // alarm's BREACHING setting was previously (and incorrectly) providing.
+    new cloudwatch.Alarm(this, "NotRunningAlarm", {
+      alarmName: "forgejo-backup-verification-not-running",
+      alarmDescription: "Backup verification Lambda has not run in the last 24h — daily verification may be broken",
+      metric: fn.metricInvocations({
+        period: cdk.Duration.hours(24),
+        statistic: cloudwatch.Stats.SUM,
+      }),
+      threshold: 1,
+      evaluationPeriods: 1,
+      treatMissingData: cloudwatch.TreatMissingData.BREACHING,
+      comparisonOperator: cloudwatch.ComparisonOperator.LESS_THAN_THRESHOLD,
+    });
+
     this.functionArn = fn.functionArn;
   }
 }