diff --git a/isso/views/comment.py b/isso/views/comment.py
index f1a2b8b..1693cc5 100644
--- a/isso/views/comment.py
+++ b/isso/views/comment.py
@@ -95,8 +95,7 @@ def new(app, environ, request, uri):
 
     resp = Response(json.dumps(rv), 202 if rv["mode"] == 2 else 201,
         content_type='application/json')
-    resp.set_cookie(str(rv["id"]), app.sign([rv["id"], checksum]),
-       max_age=app.MAX_AGE, path='/')
+    resp.set_cookie(str(rv["id"]), app.sign([rv["id"], checksum]), max_age=app.MAX_AGE)
     return resp
 
 
@@ -153,8 +152,12 @@ def single(app, environ, request, id):
         for key in set(rv.keys()) - FIELDS:
             rv.pop(key)
 
+        checksum = hashlib.md5(rv["text"]).hexdigest()
         rv["text"] = app.markdown(rv["text"])
-        return Response(json.dumps(rv), 200, content_type='application/json')
+
+        resp = Response(json.dumps(rv), 200, content_type='application/json')
+        resp.set_cookie(str(rv["id"]), app.sign([rv["id"], checksum]), max_age=app.MAX_AGE)
+        return resp
 
     if request.method == 'DELETE':
 
diff --git a/specs/test_comment.py b/specs/test_comment.py
index bb4ccac..a613028 100644
--- a/specs/test_comment.py
+++ b/specs/test_comment.py
@@ -236,3 +236,12 @@ class TestComments(unittest.TestCase):
 
         rv = self.get('/count?uri=%2Fpath%2F')
         assert rv.status_code == 404
+
+    def testModify(self):
+        self.post('/new?uri=test', data=json.dumps({"text": "Tpyo"}))
+
+        self.put('/id/1', data=json.dumps({"text": "Tyop"}))
+        assert json.loads(self.get('/id/1').data)["text"] == "<p>Tyop</p>\n"
+
+        self.put('/id/1', data=json.dumps({"text": "Typo"}))
+        assert json.loads(self.get('/id/1').data)["text"] == "<p>Typo</p>\n"