diff --git a/python2/koans/about_triangle_project2.py b/python2/koans/about_triangle_project2.py
index 6b6184657..ad637f602 100644
--- a/python2/koans/about_triangle_project2.py
+++ b/python2/koans/about_triangle_project2.py
@@ -16,4 +16,4 @@ def test_illegal_triangles_throw_exceptions(self):
 
         self.assertRaises(TriangleError, triangle, 3, 4, -5)
         self.assertRaises(TriangleError, triangle, 1, 1, 3)
-        self.assertRaises(TriangleError, triangle, 2, 4, 2)
+        self.assertRaises(TriangleError, triangle, 2, 5, 2)
diff --git a/python3/koans/about_triangle_project2.py b/python3/koans/about_triangle_project2.py
index d31dd60a5..83267d082 100644
--- a/python3/koans/about_triangle_project2.py
+++ b/python3/koans/about_triangle_project2.py
@@ -20,6 +20,6 @@ def test_illegal_triangles_throw_exceptions(self):
             triangle(1, 1, 3)
 
         with self.assertRaises(TriangleError):
-            triangle(2, 4, 2)
+            triangle(2, 5, 2)