diff --git a/um_crypto/kuwo/src/lib.rs b/um_crypto/kuwo/src/lib.rs
index 04dc1a7..1136243 100644
--- a/um_crypto/kuwo/src/lib.rs
+++ b/um_crypto/kuwo/src/lib.rs
@@ -91,8 +91,8 @@ impl Header {
         let mut format_name = [0u8; 0x0C];
         cursor.read_exact(&mut format_name)?;
 
-        if magic != Self::MAGIC_1 || magic != Self::MAGIC_2 {
-            Err(KuwoCryptoError::InvalidHeaderMagic(magic))?;
+        if magic != Self::MAGIC_1 && magic != Self::MAGIC_2 {
+            Err(KuwoCryptoError::InvalidHeaderMagic(HeaderMagicBytes(magic)))?;
         }
 
         Ok(Self {