diff --git a/x-pack/plugins/security_solution/server/usage/detections/detection_rule_helpers.ts b/x-pack/plugins/security_solution/server/usage/detections/detection_rule_helpers.ts
index 8163a73669674..446fc956c0c65 100644
--- a/x-pack/plugins/security_solution/server/usage/detections/detection_rule_helpers.ts
+++ b/x-pack/plugins/security_solution/server/usage/detections/detection_rule_helpers.ts
@@ -434,12 +434,13 @@ export const getDetectionRuleMetrics = async (
 
     const casesCache = cases.saved_objects.reduce((cache, { attributes: casesObject }) => {
       const ruleId = casesObject.rule.id;
-
-      const cacheCount = cache.get(ruleId);
-      if (cacheCount === undefined) {
-        cache.set(ruleId, 1);
-      } else {
-        cache.set(ruleId, cacheCount + 1);
+      if (ruleId != null) {
+        const cacheCount = cache.get(ruleId);
+        if (cacheCount === undefined) {
+          cache.set(ruleId, 1);
+        } else {
+          cache.set(ruleId, cacheCount + 1);
+        }
       }
       return cache;
     }, new Map<string, number>());
diff --git a/x-pack/plugins/security_solution/server/usage/detections/types.ts b/x-pack/plugins/security_solution/server/usage/detections/types.ts
index b2a9cf7af4861..6b189a1fefb71 100644
--- a/x-pack/plugins/security_solution/server/usage/detections/types.ts
+++ b/x-pack/plugins/security_solution/server/usage/detections/types.ts
@@ -154,8 +154,8 @@ export interface CasesSavedObject {
   alertId: string;
   index: string;
   rule: {
-    id: string;
-    name: string;
+    id: string | null;
+    name: string | null;
   };
 }