diff --git a/src/tests.rs b/src/tests.rs
index c30e886..4a889af 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -39,7 +39,6 @@ fn test_branch_sum() {
             .is_err()
             == false
     );
-    formula.display_tree();
     let results = formula.run(vec![0f64, 1f64, 2f64, 3f64, 4f64, 5f64]);
     assert_eq!(results, vec![1f64, 2f64, 3f64, 4f64, 5f64, 6f64])
 }