diff --git a/ts/util/long.std.ts b/ts/util/long.std.ts
index 199918cb54..c1f35bed53 100644
--- a/ts/util/long.std.ts
+++ b/ts/util/long.std.ts
@@ -1,4 +1,4 @@
 // Copyright 2026 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-export const MAX_VALUE = 0xffffffff_ffffffffn;
+export const MAX_VALUE = 0x7fffffff_ffffffffn;