diff --git a/src/abstract_tree/assignment.rs b/src/abstract_tree/assignment.rs
index fe03cb2..3153d8b 100644
--- a/src/abstract_tree/assignment.rs
+++ b/src/abstract_tree/assignment.rs
@@ -84,8 +84,6 @@ impl AbstractTree for Assignment {
             }
         } else {
             if let Type::List(item_type) = identifier_type {
-                println!("{item_type} {statement_type}");
-
                 item_type
                     .check(&statement_type)
                     .map_err(|error| error.at_node(statement_node, source))?;
diff --git a/src/abstract_tree/function_call.rs b/src/abstract_tree/function_call.rs
index fbb322b..80a188c 100644
--- a/src/abstract_tree/function_call.rs
+++ b/src/abstract_tree/function_call.rs
@@ -44,6 +44,11 @@ impl AbstractTree for FunctionCall {
                 } = &function_type
                 {
                     let expected_type = parameter_types.get(argument_index).unwrap();
+                    let expected_type = if let Type::List(item_type) = expected_type {
+                        item_type
+                    } else {
+                        expected_type
+                    };
 
                     expected_type
                         .check(&expression_type)