diff --git a/um_audio/src/sync_frame.rs b/um_audio/src/sync_frame.rs
index a276a7f..45ee29a 100644
--- a/um_audio/src/sync_frame.rs
+++ b/um_audio/src/sync_frame.rs
@@ -1,4 +1,4 @@
-pub const SYNC_FRAME_TEST_SIZE: usize = 4096;
+pub const SYNC_FRAME_TEST_SIZE: usize = 0xff;
 
 pub fn is_mp3(magic: u32) -> bool {
     // Frame sync should have the first 11 bits set to 1.