diff --git a/bin/src/main.rs b/bin/src/main.rs
index bd7e5c9..85587c6 100644
--- a/bin/src/main.rs
+++ b/bin/src/main.rs
@@ -1,16 +1,16 @@
 fn main() {
-    let base = r#"
+    let _base = r#"
         public interface Repository {
         }
     "#;
-    let left: &str = r#"
+    let _left: &str = r#"
         public interface Repository {
             void create(Pessoa pessoa);
             void delete(Pessoa pessoa);
         }
     "#;
 
-    let right = r#"
+    let _right = r#"
         public interface Repository {
             void create(Pessoa pessoa);
             void delete(Pessoa pessoa);
diff --git a/matching/src/unordered_tree_matching.rs b/matching/src/unordered_tree_matching.rs
index a5e7f32..c7947dd 100644
--- a/matching/src/unordered_tree_matching.rs
+++ b/matching/src/unordered_tree_matching.rs
@@ -114,15 +114,15 @@ fn compute_matching_score<'a>(left: &'a CSTNode, right: &'a CSTNode) -> usize {
                                 value: value_right, ..
                             },
                         ) if value_left == value_right => {
-                            return 1;
+                            1
                         }
                         (_, _) => {
-                            return 0;
+                            0
                         }
                     }
                 }
                 (_, _) => {
-                    return 0;
+                    0
                 }
             }
         }