diff --git a/boreal-parser/src/expression/for_expression.rs b/boreal-parser/src/expression/for_expression.rs
index 37b411fd..3ad29357 100644
--- a/boreal-parser/src/expression/for_expression.rs
+++ b/boreal-parser/src/expression/for_expression.rs
@@ -150,7 +150,7 @@ fn for_expression_kind(input: Input) -> ParseResult<ForExprKind> {
             preceded(rtrim(ttag("at")), cut(primary_expression)),
             |expr| ForExprKind::At(Box::new(expr)),
         ),
-        map(success(()), |_| ForExprKind::None),
+        map(success(()), |()| ForExprKind::None),
     ))(input)
 }
 
diff --git a/boreal-parser/src/file.rs b/boreal-parser/src/file.rs
index 0a5c82dd..d8218ce6 100644
--- a/boreal-parser/src/file.rs
+++ b/boreal-parser/src/file.rs
@@ -64,7 +64,7 @@ pub struct Include {
 /// If the input cannot be parsed properly and entirely as a list
 /// of yara rules, an error is returned.
 pub(crate) fn parse_yara_file(input: Input) -> ParseResult<YaraFile> {
-    let (mut input, _) = ltrim(input)?;
+    let (mut input, ()) = ltrim(input)?;
 
     let mut file = YaraFile {
         components: Vec::new(),
diff --git a/boreal-parser/src/nom_recipes.rs b/boreal-parser/src/nom_recipes.rs
index 2643a8c5..c88b5635 100644
--- a/boreal-parser/src/nom_recipes.rs
+++ b/boreal-parser/src/nom_recipes.rs
@@ -41,7 +41,7 @@ pub(crate) fn ltrim(mut input: Input) -> ParseResult<()> {
             value((), multispace1),
         ))(input)
         {
-            Ok((i, _)) => input = i,
+            Ok((i, ())) => input = i,
             Err(nom::Err::Error(_)) => return Ok((input, ())),
             err @ Err(_) => return err,
         }
diff --git a/boreal/src/module/pe/debug.rs b/boreal/src/module/pe/debug.rs
index f487afc4..0b2a07bc 100644
--- a/boreal/src/module/pe/debug.rs
+++ b/boreal/src/module/pe/debug.rs
@@ -41,7 +41,7 @@ pub fn pdb_path(data_dirs: &DataDirectories, mem: &[u8], sections: &SectionTable
         let mut info = Bytes(info);
         let sig = match info.read_bytes(4) {
             Ok(v) => v.0,
-            Err(_) => continue,
+            Err(()) => continue,
         };
 
         let pdb_path_offset = match sig {