diff --git a/um_crypto/kuwo/src/kwm_v1.rs b/um_crypto/kuwo/src/kwm_v1.rs
index cd51313..b530122 100644
--- a/um_crypto/kuwo/src/kwm_v1.rs
+++ b/um_crypto/kuwo/src/kwm_v1.rs
@@ -11,7 +11,10 @@ const KEY: [u8; 0x20] = [
 impl CipherV1 {
     pub fn new(resource_id: u32) -> Self {
         let mut key = KEY;
-        for (k, r) in key.iter_mut().zip(resource_id.to_string().as_bytes()) {
+        for (k, r) in key
+            .iter_mut()
+            .zip(resource_id.to_string().as_bytes().iter().cycle())
+        {
             *k ^= r;
         }