Fix false-positive checks when backup is running
diff --git a/backupninja/meta/sensu.yml b/backupninja/meta/sensu.yml
index 81656d8..5124216 100644
--- a/backupninja/meta/sensu.yml
+++ b/backupninja/meta/sensu.yml
@@ -3,6 +3,6 @@
     command: "PATH=$PATH:/usr/local/sbin duplicity_salt.sh nagios 24"
     interval: 3600
     timeout: 300
-    occurrences: 1
+    occurrences: 3
     subscribers:
     - {{ grains['fqdn']|replace('.', '-') }}