diff --git a/server/src/lib/score-import/import-types/ir/beatoraja/parser.ts b/server/src/lib/score-import/import-types/ir/beatoraja/parser.ts
index 4e786f50d..2729c3de3 100644
--- a/server/src/lib/score-import/import-types/ir/beatoraja/parser.ts
+++ b/server/src/lib/score-import/import-types/ir/beatoraja/parser.ts
@@ -126,18 +126,17 @@ export function ParseBeatorajaSingle(
 	const score = body.score as BeatorajaScore;
 	const chart = body.chart as BeatorajaChart;
 
-	if (chart.mode === "BEAT_14K" || chart.mode === "BEAT_7K") {
-		if (!SUPPORTED_BMS_CLIENTS.includes(client)) {
-			throw new ScoreImportFatalError(400, `Unsupported BMS client ${client}`);
-		}
-	} else if (chart.mode === "POPN_9K") {
-		if (!SUPPORTED_PMS_CLIENTS.includes(client)) {
-			throw new ScoreImportFatalError(400, `Unsupported PMS client ${client}`);
-		}
-	}
-
 	const isPMS = chart.mode === "POPN_9K";
 
+	const expectedClient = isPMS ? "beatoraja" : "LR2oraja";
+
+	if (!client.startsWith(expectedClient)) {
+		throw new ScoreImportFatalError(
+			400,
+			`Unsupported client ${client} -- Expected a variant of ${expectedClient}.`
+		);
+	}
+
 	return {
 		context: {
 			client: isPMS ? "beatoraja" : "lr2oraja",
diff --git a/server/src/server/router/ir/beatoraja/router.test.ts b/server/src/server/router/ir/beatoraja/router.test.ts
index 2254cec43..58d3dfe0b 100644
--- a/server/src/server/router/ir/beatoraja/router.test.ts
+++ b/server/src/server/router/ir/beatoraja/router.test.ts
@@ -150,7 +150,7 @@ t.test("POST /ir/beatoraja/submit-score", (t) => {
 		t.equal(res.status, 400);
 
 		t.equal(res.body.success, false);
-		t.match(res.body.description, /Unsupported BMS client/u);
+		t.match(res.body.description, /Unsupported client/u);
 
 		t.end();
 	});
@@ -165,7 +165,7 @@ t.test("POST /ir/beatoraja/submit-score", (t) => {
 		t.equal(res.status, 400);
 
 		t.equal(res.body.success, false);
-		t.match(res.body.description, /Unsupported BMS client/u);
+		t.match(res.body.description, /Unsupported client/u);
 
 		t.end();
 	});
@@ -180,7 +180,7 @@ t.test("POST /ir/beatoraja/submit-score", (t) => {
 		t.equal(res.status, 400);
 
 		t.equal(res.body.success, false);
-		t.match(res.body.description, /Unsupported PMS client/u);
+		t.match(res.body.description, /Unsupported client/u);
 
 		t.end();
 	});