diff --git a/README.md b/README.md
index 5121e90..9fb74cc 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![MIT licensed][mit-badge]][mit-url]
 [![Apache 2.0 licensed][apache-badge]][apache-url]
 [![Build Status][actions-badge]][actions-url]
-[![codecov][codecov-badge]][codecov-url]
+[![Code coverage][codecov-badge]][codecov-url]
 [![docs-badge]][docs-url]
 [![Discord chat][discord-badge]][discord-url]
 
@@ -14,7 +14,7 @@
 [apache-url]: https://github.com/ironcalc/IronCalc/blob/main/LICENSE-Apache-2.0
 
 [codecov-badge]: https://codecov.io/gh/ironcalc/IronCalc/graph/badge.svg?token=ASJX12CHNR
-[codecov-url]: (https://codecov.io/gh/ironcalc/IronCalc)
+[codecov-url]: https://codecov.io/gh/ironcalc/IronCalc
 
 [actions-badge]: https://github.com/ironcalc/ironcalc/actions/workflows/rust-build-test.yaml/badge.svg
 [actions-url]: https://github.com/ironcalc/IronCalc/actions/workflows/rust-build-test.yaml?query=workflow%3ARust+branch%3Amain
diff --git a/xlsx/src/import/worksheets.rs b/xlsx/src/import/worksheets.rs
index 2a7f3ee..0d476c8 100644
--- a/xlsx/src/import/worksheets.rs
+++ b/xlsx/src/import/worksheets.rs
@@ -20,7 +20,7 @@ use super::{
     util::{get_attribute, get_color, get_number},
 };
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize)]
 pub(crate) struct Sheet {
     pub(crate) name: String,
     pub(crate) sheet_id: u32,
@@ -28,13 +28,13 @@ pub(crate) struct Sheet {
     pub(crate) state: SheetState,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize)]
 pub(crate) struct WorkbookXML {
     pub(crate) worksheets: Vec<Sheet>,
     pub(crate) defined_names: Vec<DefinedName>,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize)]
 pub(crate) struct Relationship {
     pub(crate) target: String,
     pub(crate) rel_type: String,
@@ -183,7 +183,7 @@ fn load_comments<R: Read + std::io::Seek>(
     Ok(comments)
 }
 
-#[derive(Error, Debug, PartialEq, Eq)]
+#[derive(Error, Debug, PartialEq)]
 enum ParseReferenceError {
     #[error("RowError: {0}")]
     RowError(ParseIntError),