diff --git a/bin/src/main.rs b/bin/src/main.rs
index f3175d9..0cac351 100644
--- a/bin/src/main.rs
+++ b/bin/src/main.rs
@@ -76,12 +76,12 @@ pub fn encode<R: Read, W: Write>(
     base: &Encoding, wrap: usize, mut reader: R, mut writer: W, size: usize,
 ) -> Result<()> {
     let block = if wrap == 0 {
-        encode_block(&base)
+        encode_block(base)
     } else {
         assert_eq!(wrap * base.bit_width() % 8, 0);
         wrap * base.bit_width() / 8
     };
-    assert_eq!(block % encode_block(&base), 0);
+    assert_eq!(block % encode_block(base), 0);
     assert!(size >= block);
     let mut input = vec![0u8; size];
     let mut output = vec![0u8; base.encode_len(size)];
diff --git a/lib/macro/internal/src/lib.rs b/lib/macro/internal/src/lib.rs
index f38eec3..686e673 100644
--- a/lib/macro/internal/src/lib.rs
+++ b/lib/macro/internal/src/lib.rs
@@ -116,7 +116,7 @@ fn check_present<T>(hash_map: &HashMap<String, T>, key: &str) {
 }
 
 fn get_encoding(mut hash_map: &mut HashMap<String, TokenTree>) -> Encoding {
-    check_present(&hash_map, "symbols");
+    check_present(hash_map, "symbols");
     let spec = Specification {
         symbols: get_string(&mut hash_map, "symbols"),
         bit_order: get_bit_order(&mut hash_map),