diff --git a/src/evaluator.rs b/src/evaluator.rs
index fe8b79b..c7a0896 100644
--- a/src/evaluator.rs
+++ b/src/evaluator.rs
@@ -40,7 +40,7 @@ pub fn eval_node(env: &Environment, ast_node: Node) -> Result<Node> {
 
                 Node::Special(func) => {
                     let args = list.collect();
-                    func(&env, args)?
+                    func(env, args)?
                 }
 
                 Node::Function {