diff --git a/packages/downgrader/tests/v3.2-to-v3.1.test.ts b/packages/downgrader/tests/v3.2-to-v3.1.test.ts
index 3e6a8e9..c7910c4 100644
--- a/packages/downgrader/tests/v3.2-to-v3.1.test.ts
+++ b/packages/downgrader/tests/v3.2-to-v3.1.test.ts
@@ -462,12 +462,13 @@ describe('downgradeSpecV32ToV31', () => {
       { '#/components/securitySchemes/other': ['read'] },
       {},
     ])
-    // A scheme holding undefined is missing, as the output leaves it out.
+    // A scheme or a requirement name holding undefined is missing, as the
+    // output leaves it out.
     const unset = convert({
-      security: [{ key: [], unset: [] }],
+      security: [{ key: [], unset: [] }, { key: undefined }],
       components: { securitySchemes: { key, unset: undefined } },
     } as any)
-    expect(unset.security).toEqual([{ key: [] }])
+    expect(unset.security).toStrictEqual([{ key: [] }, {}])
     expect(unset.components?.securitySchemes).toStrictEqual({ key })
     // Without any schemes, every name is left out, and malformed values stay.
     const malformed = convert({