diff --git a/python2/koans/about_asserts.py b/python2/koans/about_asserts.py
index 61b53ada1..476458337 100644
--- a/python2/koans/about_asserts.py
+++ b/python2/koans/about_asserts.py
@@ -62,7 +62,7 @@ def test_that_sometimes_we_need_to_know_the_class_type(self):
 
         # Sometimes we will ask you what the class type of an object is.
         #
-        # For example, contemplate the text string "naval". What is it's class type?
+        # For example, contemplate the text string "naval". What is its class type?
         # The koans runner will include this feedback for this koan:
         #
         #   AssertionError: '-=> FILL ME IN! <=-' != <type 'str'>
diff --git a/python3/koans/about_asserts.py b/python3/koans/about_asserts.py
index a3d7ce047..ea10ccab5 100644
--- a/python3/koans/about_asserts.py
+++ b/python3/koans/about_asserts.py
@@ -60,7 +60,7 @@ def test_that_sometimes_we_need_to_know_the_class_type(self):
 
         # Sometimes we will ask you what the class type of an object is.
         #
-        # For example, contemplate the text string "naval". What is it's class type?
+        # For example, contemplate the text string "naval". What is its class type?
         # The koans runner will include this feedback for this koan:
         #
         #   AssertionError: '-=> FILL ME IN! <=-' != <type 'str'>