diff --git a/src/decoder/ifd.rs b/src/decoder/ifd.rs
index ce9c8e1..0b68d56 100644
--- a/src/decoder/ifd.rs
+++ b/src/decoder/ifd.rs
@@ -445,7 +445,7 @@ impl Entry {
             // 2b: the value is at most 4 bytes or doesn't fit in the offset field.
             return Ok(match self.type_ {
                 Type::BYTE => Byte(self.offset[0]),
-                Type::SBYTE => SignedByte(i8::from(self.offset[0] as i8)),
+                Type::SBYTE => SignedByte(self.offset[0] as i8),
                 Type::UNDEFINED => Byte(self.offset[0]),
                 Type::SHORT => Short(self.r(bo).read_u16()?),
                 Type::SSHORT => SignedShort(self.r(bo).read_i16()?),
diff --git a/src/decoder/image.rs b/src/decoder/image.rs
index 49510a3..e3dc31f 100644
--- a/src/decoder/image.rs
+++ b/src/decoder/image.rs
@@ -643,11 +643,11 @@ impl Image {
             self.jpeg_tables.as_deref().map(|a| &**a),
         )?;
 
-        if output_row_stride == chunk_row_bytes as usize {
+        if output_row_stride == chunk_row_bytes {
             let tile = &mut buf[..chunk_row_bytes * data_dims.1 as usize];
             reader.read_exact(tile)?;
 
-            for row in tile.chunks_mut(chunk_row_bytes as usize) {
+            for row in tile.chunks_mut(chunk_row_bytes) {
                 super::fix_endianness_and_predict(
                     row,
                     color_type.bit_depth(),
@@ -678,11 +678,7 @@ impl Image {
                 }
             }
         } else {
-            for (_i, row) in buf
-                .chunks_mut(output_row_stride)
-                .take(data_dims.1 as usize)
-                .enumerate()
-            {
+            for row in buf.chunks_mut(output_row_stride).take(data_dims.1 as usize) {
                 let row = &mut row[..data_row_bytes];
                 reader.read_exact(row)?;
 
diff --git a/src/encoder/mod.rs b/src/encoder/mod.rs
index 1c95821..717f1f0 100644
--- a/src/encoder/mod.rs
+++ b/src/encoder/mod.rs
@@ -296,7 +296,7 @@ impl<'a, W: 'a + Write + Seek, K: TiffKind> DirectoryEncoder<'a, W, K> {
         }
 
         let entry = Self::write_value(
-            &mut self.writer,
+            self.writer,
             &DirectoryEntry {
                 data_type: <T>::FIELD_TYPE,
                 count: value.count().try_into()?,
@@ -370,14 +370,14 @@ impl<'a, W: 'a + Write + Seek, K: TiffKind> DirectoryEncoder<'a, W, K> {
 
         if bytes.len() > in_entry_bytes {
             let offset = writer.offset();
-            writer.write_bytes(&bytes)?;
+            writer.write_bytes(bytes)?;
 
             let offset = K::convert_offset(offset)?;
             offset_bytes[..offset.bytes()].copy_from_slice(&offset.data());
         } else {
             // Note: we have indicated our native byte order in the header, hence this
             // corresponds to our byte order no matter the value type.
-            offset_bytes[..bytes.len()].copy_from_slice(&bytes);
+            offset_bytes[..bytes.len()].copy_from_slice(bytes);
         }
 
         // Undoing some hidden type. Offset is either u32 or u64. Due to the trait API being public
diff --git a/tests/predict.rs b/tests/predict.rs
index a61eb6c..59bb79c 100644
--- a/tests/predict.rs
+++ b/tests/predict.rs
@@ -1,7 +1,7 @@
 extern crate tiff;
 
 use tiff::decoder::{Decoder, DecodingResult};
-use tiff::encoder::{colortype, Compression, Predictor, TiffEncoder};
+use tiff::encoder::{colortype, Predictor, TiffEncoder};
 use tiff::ColorType;
 
 use std::fs::File;