diff --git a/Lib/test/test_al.py b/Lib/test/test_al.py
index 66955ba..02876f0 100755
--- a/Lib/test/test_al.py
+++ b/Lib/test/test_al.py
@@ -8,7 +8,7 @@
 alattrs = ['__doc__', '__name__', 'getdefault', 'getminmax', 'getname', 'getparams',
            'newconfig', 'openport', 'queryparams', 'setparams']
 
-# This is a very unobtrusive test for the existence of the al module and all it's
+# This is a very unobtrusive test for the existence of the al module and all its
 # attributes.  More comprehensive examples can be found in Demo/al
 
 def main():
diff --git a/Lib/test/test_cd.py b/Lib/test/test_cd.py
index 9a65a7d..d856211 100755
--- a/Lib/test/test_cd.py
+++ b/Lib/test/test_cd.py
@@ -10,7 +10,7 @@
            'ident', 'index', 'msftoframe', 'open', 'pnum', 'ptime']
 
 
-# This is a very inobtrusive test for the existence of the cd module and all it's
+# This is a very inobtrusive test for the existence of the cd module and all its
 # attributes.  More comprehensive examples can be found in Demo/cd and
 # require that you have a CD and a CD ROM drive
 
diff --git a/Lib/test/test_cl.py b/Lib/test/test_cl.py
index d3efe9f..abfe3c1 100755
--- a/Lib/test/test_cl.py
+++ b/Lib/test/test_cl.py
@@ -64,7 +64,7 @@
 
 
 # This is a very inobtrusive test for the existence of the cl
-# module and all it's attributes.
+# module and all its attributes.
 
 def main():
     # touch all the attributes of al without doing anything
diff --git a/Lib/test/test_minidom.py b/Lib/test/test_minidom.py
index a54fbd3..15581cc 100644
--- a/Lib/test/test_minidom.py
+++ b/Lib/test/test_minidom.py
@@ -1199,7 +1199,7 @@
             and not a1.isId
             and a2.isId
             and not a3.isId)
-    # renaming an attribute should not affect it's ID-ness:
+    # renaming an attribute should not affect its ID-ness:
     doc.renameNode(a2, xml.dom.EMPTY_NAMESPACE, "an")
     confirm(e.isSameNode(doc.getElementById("w"))
             and a2.isId)
@@ -1235,7 +1235,7 @@
     confirm(a2.isId)
     confirm(not a3.isId)
     confirm(doc.getElementById("v") is None)
-    # renaming an attribute should not affect it's ID-ness:
+    # renaming an attribute should not affect its ID-ness:
     doc.renameNode(a2, xml.dom.EMPTY_NAMESPACE, "an")
     confirm(e.isSameNode(doc.getElementById("w"))
             and a2.isId)
@@ -1271,7 +1271,7 @@
     confirm(a2.isId)
     confirm(not a3.isId)
     confirm(doc.getElementById("v") is None)
-    # renaming an attribute should not affect it's ID-ness:
+    # renaming an attribute should not affect its ID-ness:
     doc.renameNode(a2, xml.dom.EMPTY_NAMESPACE, "an")
     confirm(e.isSameNode(doc.getElementById("w"))
             and a2.isId)
diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index 0bbabb1..f6dbe0e 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -191,7 +191,7 @@
     def test_decimal_numeric_consistent(self):
         # Test that decimal and numeric are consistent,
         # i.e. if a character has a decimal value,
-        # it's numeric value should be the same.
+        # its numeric value should be the same.
         count = 0
         for i in xrange(0x10000):
             c = unichr(i)
@@ -204,7 +204,7 @@
     def test_digit_numeric_consistent(self):
         # Test that digit and numeric are consistent,
         # i.e. if a character has a digit value,
-        # it's numeric value should be the same.
+        # its numeric value should be the same.
         count = 0
         for i in xrange(0x10000):
             c = unichr(i)