diff --git a/src/tc_tea_cbc.rs b/src/tc_tea_cbc.rs
index 64e3ff9..a434e8b 100644
--- a/src/tc_tea_cbc.rs
+++ b/src/tc_tea_cbc.rs
@@ -128,7 +128,7 @@ mod tests {
 
     #[test]
     fn tc_tea_decryption_reject_non_zero_byte() {
-        let mut bad_data = GOOD_ENCRYPTED_DATA.clone();
+        let mut bad_data = GOOD_ENCRYPTED_DATA;
         bad_data[23] ^= 0xff; // last byte
         assert!(decrypt(&bad_data, ENCRYPTION_KEY).is_none());
     }
diff --git a/src/tc_tea_internal.rs b/src/tc_tea_internal.rs
index 89a4728..f3fd475 100644
--- a/src/tc_tea_internal.rs
+++ b/src/tc_tea_internal.rs
@@ -13,7 +13,7 @@ pub fn parse_key(key: &[u8]) -> Option<[u32; 4]> {
     for (i, k) in k.iter_mut().enumerate() {
         *k = key.read_u32_be(i * 4);
     }
-    return Some(k);
+    Some(k)
 }
 
 #[inline]