diff --git a/tests/test_main.py b/tests/test_main.py
index 08085e8..59d6446 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -14,7 +14,7 @@ def test_sum_wrong():
     b = 2
     s_wrong = 4
 
-    assert s_wrong == sum(a, b)
+    assert s_wrong != sum(a, b)
 
 def test_mul():
     a = 1