diff --git a/telegram/ext/commandhandler.py b/telegram/ext/commandhandler.py
index e7a1f66bf..52bc02ac4 100644
--- a/telegram/ext/commandhandler.py
+++ b/telegram/ext/commandhandler.py
@@ -110,7 +110,7 @@ class CommandHandler(Handler):
                     res = self.filters(message)
 
                 return res and (message.text.startswith('/') and command[0] == self.command
-                                and command[1] == update.message.bot.username)
+                                and command[1].lower() == update.message.bot.username.lower())
             else:
                 return False
 
diff --git a/telegram/ext/messagequeue.py b/telegram/ext/messagequeue.py
index 6d512a27f..f4b516b63 100644
--- a/telegram/ext/messagequeue.py
+++ b/telegram/ext/messagequeue.py
@@ -38,7 +38,7 @@ else:
 #  on Windows, the best available is time.clock while time.time is on
 #  another platforms (M. Lutz, "Learning Python," 4ed, p.630-634)
 if sys.version_info.major == 3 and sys.version_info.minor >= 3:
-    curtime = time.perf_counter
+    curtime = time.perf_counter  # pylint: disable=E1101
 else:
     curtime = time.clock if sys.platform[:3] == 'win' else time.time
 
diff --git a/tests/test_updater.py b/tests/test_updater.py
index 5ed7c4c20..123510e79 100644
--- a/tests/test_updater.py
+++ b/tests/test_updater.py
@@ -250,6 +250,10 @@ class UpdaterTest(BaseTest, unittest.TestCase):
         queue.put(Update(update_id=0, message=message))
         sleep(.1)
         self.assertEqual(self.received_message, '/test@MockBot')
+        message.text = "/test@mockbot"
+        queue.put(Update(update_id=0, message=message))
+        sleep(.1)
+        self.assertEqual(self.received_message, '/test@mockbot')
 
         # directed at other bot
         self.reset()