diff --git a/packages/backend/src/misc/QuantumKVCache.ts b/packages/backend/src/misc/QuantumKVCache.ts
index 72fae7b161..ebf4e2daa4 100644
--- a/packages/backend/src/misc/QuantumKVCache.ts
+++ b/packages/backend/src/misc/QuantumKVCache.ts
@@ -399,13 +399,15 @@ export class QuantumKVCache<TIn, T extends Value<TIn> = Value<TIn>> implements I
 	/**
 	 * Gets multiple values from the local memory cache; returning undefined for any missing keys.
 	 * Returns cached data only - does not make any fetches.
-	 * TODO don't return undefined, matching fetch
 	 */
 	@bindThis
-	public getMany(keys: Iterable<string>): [key: string, value: T | undefined][] {
-		const results: [key: string, value: T | undefined][] = [];
+	public getMany(keys: Iterable<string>): [key: string, value: T][] {
+		const results: [key: string, value: T][] = [];
 		for (const key of keys) {
-			results.push([key, this.getMaybe(key)]);
+			const value = this.getMaybe(key);
+			if (value !== undefined) {
+				results.push([key, value]);
+			}
 		}
 		return results;
 	}
diff --git a/packages/backend/test/unit/misc/QuantumKVCacheTests.ts b/packages/backend/test/unit/misc/QuantumKVCacheTests.ts
index 5d9428b6b7..a3d6abb3ad 100644
--- a/packages/backend/test/unit/misc/QuantumKVCacheTests.ts
+++ b/packages/backend/test/unit/misc/QuantumKVCacheTests.ts
@@ -308,7 +308,7 @@ describe(QuantumKVCache, () => {
 			expect(result).toEqual([]);
 		});
 
-		it('should return the value for all keys', () => {
+		it('should include the value of all found keys', () => {
 			const cache = makeCache();
 			cache.add('foo', 'bar');
 			cache.add('alpha', 'omega');
@@ -318,13 +318,13 @@ describe(QuantumKVCache, () => {
 			expect(result).toEqual([['foo', 'bar'], ['alpha', 'omega']]);
 		});
 
-		it('should return undefined for missing keys', () => {
+		it('should exclude all missing keys', () => {
 			const cache = makeCache();
 			cache.add('foo', 'bar');
 
 			const result = cache.getMany(['foo', 'alpha']);
 
-			expect(result).toEqual([['foo', 'bar'], ['alpha', undefined]]);
+			expect(result).toEqual([['foo', 'bar']]);
 		});
 	});