diff --git a/fbchat/client.py b/fbchat/client.py
index 4698155..91f2b74 100644
--- a/fbchat/client.py
+++ b/fbchat/client.py
@@ -209,8 +209,18 @@ class Client(object):
 
         r = self._get(self.req_url.BASE)
         soup = bs(r.text, "lxml")
-        self.fb_dtsg = soup.find("input", {'name':'fb_dtsg'})['value']
-        self.fb_h = soup.find("input", {'name':'h'})['value']
+
+        fb_dtsg_element = soup.find("input", {'name': 'fb_dtsg'})
+        if fb_dtsg_element:
+            self.fb_dtsg = fb_dtsg_element['value']
+        else:
+            self.fb_dtsg = re.search(r'name="fb_dtsg" value="(.*?)"', r.text).group(1)
+
+        
+        fb_h_element = soup.find("input", {'name':'h'})
+        if fb_h_element:
+            self.fb_h = fb_h_element['value']
+
         for i in self.fb_dtsg:
             self.ttstamp += str(ord(i))
         self.ttstamp += '2'
@@ -400,6 +410,11 @@ class Client(object):
         :return: True if the action was successful
         :rtype: bool
         """
+
+        if not hasattr(self, 'fb_h'):
+            h_r = self._post(self.req_url.MODERN_SETTINGS_MENU, {'pmid': '4'})
+            self.fb_h = re.search(r'name=\\"h\\" value=\\"(.*?)\\"', h_r.text).group(1)
+
         data = {
             'ref': "mb",
             'h': self.fb_h
diff --git a/fbchat/utils.py b/fbchat/utils.py
index 87eef26..c3fe933 100644
--- a/fbchat/utils.py
+++ b/fbchat/utils.py
@@ -121,6 +121,7 @@ class ReqUrl(object):
     GRAPHQL = "https://www.facebook.com/api/graphqlbatch/"
     ATTACHMENT_PHOTO = "https://www.facebook.com/mercury/attachments/photo/"
     EVENT_REMINDER = "https://www.facebook.com/ajax/eventreminder/create"
+    MODERN_SETTINGS_MENU = "https://www.facebook.com/bluebar/modern_settings_menu/"
 
     pull_channel = 0