diff --git a/x-pack/plugins/rule_registry/common/types.ts b/x-pack/plugins/rule_registry/common/types.ts
index a7499d97d05f6..7b2fde48057a6 100644
--- a/x-pack/plugins/rule_registry/common/types.ts
+++ b/x-pack/plugins/rule_registry/common/types.ts
@@ -66,7 +66,7 @@ interface BucketAggsSchemas {
     exclude?: string | string[];
     include?: string | string[];
     execution_hint?: string;
-    missing?: number;
+    missing?: number | string;
     min_doc_count?: number;
     size?: number;
     show_term_doc_count_error?: boolean;
@@ -170,7 +170,7 @@ export const BucketAggsSchemas: t.Type<BucketAggsSchemas> = t.recursion('BucketA
           exclude: t.union([t.string, t.array(t.string)]),
           include: t.union([t.string, t.array(t.string)]),
           execution_hint: t.string,
-          missing: t.number,
+          missing: t.union([t.number, t.string]),
           min_doc_count: t.number,
           size: t.number,
           show_term_doc_count_error: t.boolean,
diff --git a/x-pack/plugins/rule_registry/server/alert_data_client/alerts_client.ts b/x-pack/plugins/rule_registry/server/alert_data_client/alerts_client.ts
index ad82dec713952..75b63fe51f7cb 100644
--- a/x-pack/plugins/rule_registry/server/alert_data_client/alerts_client.ts
+++ b/x-pack/plugins/rule_registry/server/alert_data_client/alerts_client.ts
@@ -612,8 +612,7 @@ export class AlertsClient {
     query,
     aggs,
     _source,
-    // eslint-disable-next-line @typescript-eslint/naming-convention
-    track_total_hits,
+    track_total_hits: trackTotalHits,
     size,
     index,
   }: {
@@ -624,16 +623,13 @@ export class AlertsClient {
     _source?: string[] | undefined;
     size?: number | undefined;
   }) {
-    this.logger.debug(
-      JSON.stringify({ query, aggs, _source, track_total_hits, size, index }, null, 2)
-    );
     try {
       // first search for the alert by id, then use the alert info to check if user has access to it
       const alertsSearchResponse = await this.singleSearchAfterAndAudit({
         query,
         aggs,
         _source,
-        track_total_hits,
+        track_total_hits: trackTotalHits,
         size,
         index,
         operation: ReadOperations.Find,