diff --git a/frontend/src/lib/api/feed.test.ts b/frontend/src/lib/api/feed.test.ts
index fed12e06..bc05aa09 100644
--- a/frontend/src/lib/api/feed.test.ts
+++ b/frontend/src/lib/api/feed.test.ts
@@ -106,24 +106,32 @@ describe("feed filters on the wire", () => {
       [...(block?.[1] ?? "").matchAll(/^\s{4}(\w+):/gm)].flatMap((m) => (m[1] ? [m[1]] : [])),
     );
     known.add("sort").add("seed").add("cursor").add("limit"); // read by /feed itself
-    const everything = sent(
-      {
-        tags: [1],
-        tagModes: { language: "and", topic: "and", other: "and" },
-        channelIds: ["UC"],
-        untagged: true,
-        q: "x",
-        maxAgeDays: 3,
-        dateFrom: "2024-01-01",
-        dateTo: "2024-01-02",
-        minDuration: 1,
-        maxDuration: 2,
-        sort: "shuffle",
-        seed: 1,
-      },
-      "C",
-    );
-    const unknown = [...new Set(everything.keys())].filter((k) => !known.has(k));
+    // Every field set (Required: a new filter field fails tsc here until it has a value, so its key
+    // is checked too). `year` wins over the other date filters, so the set goes out once with it
+    // and once without.
+    const all: Required<FeedFilters> = {
+      tags: [1],
+      tagModes: { language: "and", topic: "and", other: "and" },
+      q: "x",
+      sort: "shuffle",
+      seed: 1,
+      scope: "all",
+      includeNormal: false,
+      includeShorts: true,
+      includeLive: true,
+      show: "all",
+      librarySource: "search",
+      untagged: true,
+      channelIds: ["UC"],
+      maxAgeDays: 3,
+      minDuration: 1,
+      maxDuration: 2,
+      dateFrom: "2024-01-01",
+      dateTo: "2024-01-02",
+      year: 2020,
+    };
+    const everything = [...sent(all, "C").keys(), ...sent({ ...all, year: undefined }, "C").keys()];
+    const unknown = [...new Set(everything)].filter((k) => !known.has(k));
     expect(unknown).toEqual([]);
     expect(known.has("tag_mode_topic")).toBe(true); // the parse found the real list
   });
diff --git a/frontend/src/lib/api/plexFilters.dom.test.ts b/frontend/src/lib/api/plexFilters.dom.test.ts
index f5bbe656..cdeef134 100644
--- a/frontend/src/lib/api/plexFilters.dom.test.ts
+++ b/frontend/src/lib/api/plexFilters.dom.test.ts
@@ -8,7 +8,8 @@ import { plexFiltersToParams, type PlexFilters } from "./plex";
 // the backend renames does not fail anywhere — the filter silently stops narrowing while its chip
 // still shows (E32 S2, the sibling of lib/api/feed.test.ts). Every key the filter set can put on the
 // wire must be a field of the backend's LibraryFilters, which /library and /facets both inject.
-const EVERYTHING: PlexFilters = {
+// Required: a new filter field fails tsc here until it has a value, so the checks below see its key.
+const EVERYTHING: Required<PlexFilters> = {
   genres: ["Drama"],
   genreMode: "all",
   contentRatings: ["PG"],