diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt b/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt
index f7383aaab..5256eff51 100644
--- a/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt
+++ b/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt
@@ -17,6 +17,7 @@ import org.opensearch.alerting.action.SearchEmailGroupAction
 import org.opensearch.alerting.alerts.AlertIndices
 import org.opensearch.alerting.alerts.AlertIndices.Companion.ALL_ALERT_INDEX_PATTERN
 import org.opensearch.alerting.comments.CommentsIndices
+import org.opensearch.alerting.comments.CommentsIndices.Companion.ALL_COMMENTS_INDEX_PATTERN
 import org.opensearch.alerting.core.JobSweeper
 import org.opensearch.alerting.core.ScheduledJobIndices
 import org.opensearch.alerting.core.action.node.ScheduledJobsStatsAction
@@ -434,7 +435,8 @@ internal class AlertingPlugin : PainlessExtension, ActionPlugin, ScriptPlugin, R
     override fun getSystemIndexDescriptors(settings: Settings): Collection<SystemIndexDescriptor> {
         return listOf(
             SystemIndexDescriptor(ALL_ALERT_INDEX_PATTERN, "Alerting Plugin system index pattern"),
-            SystemIndexDescriptor(SCHEDULED_JOBS_INDEX, "Alerting Plugin Configuration index")
+            SystemIndexDescriptor(SCHEDULED_JOBS_INDEX, "Alerting Plugin Configuration index"),
+            SystemIndexDescriptor(ALL_COMMENTS_INDEX_PATTERN, "Alerting Comments system index pattern")
         )
     }