diff --git a/src/lib/rag-eval-cases.ts b/src/lib/rag-eval-cases.ts
index b29a31344..a6d028a8c 100644
--- a/src/lib/rag-eval-cases.ts
+++ b/src/lib/rag-eval-cases.ts
@@ -129,10 +129,14 @@ export function scoreAnswerQualityEvalCase(testCase: AnswerQualityEvalCase, answ
   const relevanceOk = testCase.supported
     ? testCase.acceptSourceOnly
       ? // Diffuse question: a grounded synthesis OR a source-only/unsupported answer is acceptable,
-        // but it must still surface the expected documents (cite or name them). Without this a
-        // source-only answer that stopped retrieving the expected doc would still score relevant,
-        // hiding a retrieval regression in this canary.
-        (answer.grounded || unsupported) && expectedClassOk && citesOrNamesExpectedDocument(testCase, answer, text)
+        // but it must still CITE the expected documents. A prose mention is not enough — the doc-name
+        // alternatives include bare topic tokens (e.g. "duress"), so a gap answer that merely names
+        // the topic would slip through. Require citation coverage, otherwise a source-only answer
+        // that stopped retrieving the expected doc would still score relevant and hide a retrieval
+        // regression in this canary.
+        (answer.grounded || unsupported) &&
+        expectedClassOk &&
+        expectedFileCoverage(testCase.expectedFiles, answer.citations, answer.citations.length).anyHit
       : answer.grounded && answer.citations.length >= testCase.minCitations && expectedClassOk
     : unsupported;
   const readabilityOk = wordCount >= 5 && wordCount <= 220 && !fragmentPattern.test(text);
diff --git a/tests/rag-eval-cases.test.ts b/tests/rag-eval-cases.test.ts
index 37c1c4303..7f3358d29 100644
--- a/tests/rag-eval-cases.test.ts
+++ b/tests/rag-eval-cases.test.ts
@@ -276,8 +276,10 @@ describe("captured RAG eval cases", () => {
 
     // A source-only answer that no longer surfaces the expected document must NOT score relevant —
     // otherwise a retrieval regression that stops returning MHSP.Discharge.pdf would hide here.
+    // A prose mention of the topic ("discharge") must NOT rescue an uncited answer — coverage is
+    // citation-based, not answer-text based (the doc-name alternatives include bare topic tokens).
     const withoutCite = {
-      answer: "No current indexed document directly supporting this request was found.",
+      answer: "No current source with discharge documentation guidance was found.",
       grounded: false,
       confidence: "unsupported",
       citations: [],