diff --git a/src/helpers.rs b/src/helpers.rs
index 2f9ae41..7b132fd 100644
--- a/src/helpers.rs
+++ b/src/helpers.rs
@@ -8,12 +8,11 @@ use std::{
 use crate::{
     common::{BitMatrix, HybridBinarizer},
     multi::{GenericMultipleBarcodeReader, MultipleBarcodeReader},
-    BarcodeFormat, BinaryBitmap, DecodeHintType, DecodeHintValue,
-    DecodingHintDictionary, Exceptions, Luma8LuminanceSource, MultiFormatReader, RXingResult,
-    Reader,
+    BarcodeFormat, BinaryBitmap, DecodeHintType, DecodeHintValue, DecodingHintDictionary,
+    Exceptions, Luma8LuminanceSource, MultiFormatReader, RXingResult, Reader,
 };
 
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 use crate::BufferedImageLuminanceSource;
 
 #[cfg(feature = "svg_read")]
diff --git a/src/multi/mod.rs b/src/multi/mod.rs
index db744d7..4a1fb4f 100644
--- a/src/multi/mod.rs
+++ b/src/multi/mod.rs
@@ -9,5 +9,5 @@ mod generic_multiple_barcode_reader;
 pub use generic_multiple_barcode_reader::*;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod multi_test_case;
diff --git a/src/multi/qrcode/qr_code_multi_reader.rs b/src/multi/qrcode/qr_code_multi_reader.rs
index 8e5a5ad..d75e2f0 100644
--- a/src/multi/qrcode/qr_code_multi_reader.rs
+++ b/src/multi/qrcode/qr_code_multi_reader.rs
@@ -205,7 +205,7 @@ fn compareRXingResult(a: &RXingResult, b: &RXingResult) -> Ordering {
 }
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod multi_qr_code_test_case {
     /*
      * Copyright 2016 ZXing authors
diff --git a/src/oned/rss/expanded/mod.rs b/src/oned/rss/expanded/mod.rs
index a4a89b8..48f73a6 100644
--- a/src/oned/rss/expanded/mod.rs
+++ b/src/oned/rss/expanded/mod.rs
@@ -16,25 +16,25 @@ mod rss_expanded_reader;
 pub use rss_expanded_reader::*;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod rss_expanded_internal_test_case;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod rss_expanded_image_2_binary_test_tase;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod rss_expanded_image_2_result_test_case;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod rss_expanded_image_2_string_test_case;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod rss_expanded_stacked_internal_test_case;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod test_case_util;
diff --git a/src/qrcode/mod.rs b/src/qrcode/mod.rs
index 2371ff1..be88824 100644
--- a/src/qrcode/mod.rs
+++ b/src/qrcode/mod.rs
@@ -9,5 +9,5 @@ mod qr_code_writer;
 pub use qr_code_writer::*;
 
 #[cfg(test)]
-#[cfg(feature="image")]
+#[cfg(feature = "image")]
 mod QRCodeWriterTestCase;