diff --git a/huff_parser/src/lib.rs b/huff_parser/src/lib.rs
index 22b122c5..c29fc5d1 100644
--- a/huff_parser/src/lib.rs
+++ b/huff_parser/src/lib.rs
@@ -104,7 +104,7 @@ impl Parser {
                     TokenKind::Macro | TokenKind::Fn | TokenKind::Test => {
                         let m = self.parse_macro()?;
                         tracing::info!(target: "parser", "SUCCESSFULLY PARSED MACRO {}", m.name);
-                        self.check_duplicate_macro(&mut contract, m.clone())?;
+                        self.check_duplicate_macro(&contract, m.clone())?;
                         contract.macros.push(m);
                     }
                     TokenKind::JumpTable | TokenKind::JumpTablePacked | TokenKind::CodeTable => {
@@ -189,11 +189,11 @@ impl Parser {
     /// Checks if there is a duplicate macro name
     pub fn check_duplicate_macro(
         &self,
-        contract: &mut Contract,
+        contract: &Contract,
         m: MacroDefinition,
     ) -> Result<(), ParserError> {
         if contract.macros.binary_search_by(|_macro| _macro.name.cmp(&m.name)).is_ok() {
-            return Err(ParserError {
+            Err(ParserError {
                 kind: ParserErrorKind::DuplicateMacro(m.name),
                 hint: Some("MACRO names should be unique".to_string()),
                 spans: AstSpan(vec![self.spans[2].clone()]),
diff --git a/huff_parser/tests/macro.rs b/huff_parser/tests/macro.rs
index 412d2136..6217eda2 100644
--- a/huff_parser/tests/macro.rs
+++ b/huff_parser/tests/macro.rs
@@ -1289,8 +1289,8 @@ fn test_duplicate_macro_error() {
                     kind: ParserErrorKind::DuplicateMacro("MINT".to_string()),
                     hint: Some("MACRO names should be unique".to_string()),
                     spans: AstSpan(vec![Span {
-                        start: occurrences[1].0.clone(),
-                        end: occurrences[1].1.clone(),
+                        start: occurrences[1].0,
+                        end: occurrences[1].1,
                         file: None
                     }]),
                 }