diff --git a/exercises/12-Rand-From-One-to-Twelve/test.py b/exercises/12-Rand-From-One-to-Twelve/test.py
index 91541800..42c6e1da 100644
--- a/exercises/12-Rand-From-One-to-Twelve/test.py
+++ b/exercises/12-Rand-From-One-to-Twelve/test.py
@@ -34,4 +34,4 @@ def test_function_called_for():
     with open(path, 'r') as content_file:
         content = content_file.read()
         regex = re.compile(r"print\s*\(\s*get_randomInt\s*\(\s*\)\s*\)")
-        assert bool(regex.search(content)) == True
\ No newline at end of file
+        assert bool(regex.search(content)) == True
diff --git a/exercises/17-Russian-Roulette/test.py b/exercises/17-Russian-Roulette/test.py
index f5bdd464..6dd372f1 100644
--- a/exercises/17-Russian-Roulette/test.py
+++ b/exercises/17-Russian-Roulette/test.py
@@ -10,11 +10,11 @@
 
 @pytest.mark.it('The function spin_chamber must exist')
 def test_function_spin_chamber(capsys, app):
-    assert app.spin_chamber()
+    assert app.spin_chamber
 
 @pytest.mark.it('The function fire_gun must exist')
 def test_function_fire_gun(capsys, app):
-    assert app.fire_gun()
+    assert app.fire_gun
 
 @pytest.mark.it('The function fire_gun should return the expected output in both cases')
 def test_function_output(capsys, app):