diff --git a/radius/src/avp.rs b/radius/src/avp.rs
index 5f7be9e..10868d3 100644
--- a/radius/src/avp.rs
+++ b/radius/src/avp.rs
@@ -219,7 +219,7 @@ impl AVP {
             let mut chunk_vec = chunk.to_vec();
             let l = chunk.len();
             if l < 16 {
-                chunk_vec.extend(vec![0 as u8; 16 - l]); // zero padding
+                chunk_vec.extend(vec![0; 16 - l]); // zero padding
             }
 
             let enc_block = md5::compute([secret, &buff[..]].concat()).to_vec();
@@ -319,7 +319,7 @@ impl AVP {
             let mut chunk_vec = chunk.to_vec();
             let l = chunk.len();
             if l < 16 {
-                chunk_vec.extend(vec![0 as u8; 16 - l]); // zero padding
+                chunk_vec.extend(vec![0; 16 - l]); // zero padding
             }
 
             let enc_block = md5::compute([secret, &buff[..]].concat()).to_vec();