diff --git a/interpreter/tests/common/mod.rs b/interpreter/tests/common/mod.rs
index 36ad1a7..ad7a1e6 100644
--- a/interpreter/tests/common/mod.rs
+++ b/interpreter/tests/common/mod.rs
@@ -42,7 +42,8 @@ pub fn run_test(path: impl Into<PathBuf>) {
     let output = Rc::new(RefCell::new(output));
 
     {
-        let output: Rc<RefCell<Vec<u8>>> = Rc::clone(&output);
+        let output = Rc::clone(&output);
+
         let mut runtime = Runtime::new(Rc::new(RefCell::new(stdin())), output);
 
         match run(&source, &mut runtime) {