diff --git a/participants/scipy_000/pr_tutorial/buggy_function.py b/participants/scipy_000/pr_tutorial/buggy_function.py
index 6f38a6b..ab5b2fe 100644
--- a/participants/scipy_000/pr_tutorial/buggy_function.py
+++ b/participants/scipy_000/pr_tutorial/buggy_function.py
@@ -20,7 +20,7 @@ def angle_to_sexigesimal(angle_in_degrees, decimals=3):
     if math.floor(decimals) != decimals:
         raise OSError('decimals should be an integer!')
 
-    hours_num = angle_in_degrees*24/180
+    hours_num = angle_in_degrees*24/360
     hours = math.floor(hours_num)
 
     min_num = (hours_num - hours)*60
diff --git a/participants/scipy_000/pr_tutorial/tests/test_buggy_function.py b/participants/scipy_000/pr_tutorial/tests/test_buggy_function.py
new file mode 100644
index 0000000..ac59fff
--- /dev/null
+++ b/participants/scipy_000/pr_tutorial/tests/test_buggy_function.py
@@ -0,0 +1,4 @@
+from pr_tutorial.buggy_function import angle_to_sexigesimal
+
+def test_angle_to_sexigesimal_30():
+    assert angle_to_sexigesimal(30) == "2:0:0.000"