diff --git a/packages/shared/sdk-client/__tests__/LDCLientImpl.inspections.test.ts b/packages/shared/sdk-client/__tests__/LDCLientImpl.inspections.test.ts
index 487299d6c..13b5f1b78 100644
--- a/packages/shared/sdk-client/__tests__/LDCLientImpl.inspections.test.ts
+++ b/packages/shared/sdk-client/__tests__/LDCLientImpl.inspections.test.ts
@@ -187,5 +187,7 @@ it('calls flag-details-changed inspectors when all flag values change', async ()
     'moonshot-demo': { reason: null, value: true, variationIndex: 0 },
     test1: { reason: null, value: 's1', variationIndex: 0 },
     'this-is-a-test': { reason: null, value: true, variationIndex: 0 },
+    'has-prereq-depth-1': { reason: { kind: 'FALLTHROUGH' }, value: true, variationIndex: 0 },
+    'is-prereq': { reason: { kind: 'FALLTHROUGH' }, value: true, variationIndex: 0 },
   });
 });
diff --git a/packages/shared/sdk-client/src/evaluation/evaluationDetail.ts b/packages/shared/sdk-client/src/evaluation/evaluationDetail.ts
index cb94cae82..66a5d5713 100644
--- a/packages/shared/sdk-client/src/evaluation/evaluationDetail.ts
+++ b/packages/shared/sdk-client/src/evaluation/evaluationDetail.ts
@@ -19,10 +19,13 @@ export function createSuccessEvaluationDetail(
   reason?: LDEvaluationReason,
   prerequisites?: string[],
 ): LDEvaluationDetail {
-  return {
+  const res: LDEvaluationDetail = {
     value,
     variationIndex: variationIndex ?? null,
     reason: reason ?? null,
-    prerequisites,
   };
+  if (prerequisites) {
+    res.prerequisites = prerequisites;
+  }
+  return res;
 }