diff --git a/server/src/lib/score-import/import-types/ir/usc/converter.test.ts b/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
index 78ccab45e..823103106 100644
--- a/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
+++ b/server/src/lib/score-import/import-types/ir/usc/converter.test.ts
@@ -18,6 +18,14 @@ t.test("#DeriveLamp", (t) => {
 
 	t.equal(DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1 }), logger), "FAILED");
 	t.equal(DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 0 }), logger), "FAILED");
+	t.equal(
+		DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1, score: 10_000_000 }), logger),
+		"PERFECT ULTIMATE CHAIN"
+	);
+	t.equal(
+		DeriveLamp(d(uscScore, { options: { gaugeType: 2 }, gauge: 1, error: 0 }), logger),
+		"ULTIMATE CHAIN"
+	);
 
 	t.equal(
 		DeriveLamp(d(uscScore, { options: { gaugeType: 1 }, gauge: 0.1 }), logger),
@@ -61,7 +69,7 @@ t.test("#DeriveLamp", (t) => {
 		"ULTIMATE CHAIN"
 	);
 
-	t.throws(() => DeriveLamp(d(uscScore, { options: { gaugeType: 2 } }), logger));
+	t.throws(() => DeriveLamp(d(uscScore, { options: { gaugeType: 3 } }), logger));
 
 	t.end();
 });