diff --git a/libcryptomarket/__init__.py b/libcryptomarket/__init__.py
index 732f132..d3dab23 100644
--- a/libcryptomarket/__init__.py
+++ b/libcryptomarket/__init__.py
@@ -5,8 +5,6 @@
 """Top-level package for libcryptomarket."""
 
 from libcryptomarket.exchange import *
-from libcryptomarket.instrument import instruments
-from libcryptomarket.order_book import order_book
 from libcryptomarket.candle import (
     candles, latest_candles, FREQUENCY_TO_SEC_DICT)
 import libcryptomarket.candle.inject
diff --git a/libcryptomarket/cli/candles.py b/libcryptomarket/cli/candles.py
index 307881c..f7da54e 100644
--- a/libcryptomarket/cli/candles.py
+++ b/libcryptomarket/cli/candles.py
@@ -5,10 +5,12 @@ import pandas as pd
 
 # pylint: disable-msg=W0401
 from libcryptomarket.exchange import *  # flake8: noqa
-from libcryptomarket import FREQUENCY_TO_SEC_DICT
 
 LOG_FORMAT = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
 
+FREQUENCIES = ['1m', '5m', '15m', '30m', '1h', '3h', '6h', '12h', '1d',
+               '1w', '2w', '1M', ]
+
 
 def get_args():
     """Get input arguments.
@@ -22,7 +24,7 @@ def get_args():
                         type=str, nargs='+', required=True)
     parser.add_argument('--frequency', action='store', dest='frequency',
                         help='Frequency.',
-                        choices=list(FREQUENCY_TO_SEC_DICT.keys()),
+                        choices=list(FREQUENCIES),
                         required=True)
     parser.add_argument('--start-time', action='store', dest='start_time',
                         help='Start time in format of \'YYYY-MM-DD\'',