diff --git a/djing/settings.py b/djing/settings.py
index 1089d52..7b016e3 100644
--- a/djing/settings.py
+++ b/djing/settings.py
@@ -230,10 +230,10 @@ SERVER_EMAIL = getattr(local_settings, 'SERVER_EMAIL', EMAIL_HOST_USER)
 
 # REDIS related settings
 REDIS_HOST = 'localhost'
-REDIS_PORT = '6379'
-BROKER_URL = 'redis://' + REDIS_HOST + ':' + REDIS_PORT + '/0'
+REDIS_PORT = 6379
+BROKER_URL = 'redis://%s:%d/0' % (REDIS_HOST, REDIS_PORT)
 BROKER_TRANSPORT_OPTIONS = {'visibility_timeout': 3600}
-CELERY_RESULT_BACKEND = 'redis://' + REDIS_HOST + ':' + REDIS_PORT + '/0'
+CELERY_RESULT_BACKEND = 'redis://%s:%d/0' % (REDIS_HOST, REDIS_PORT)
 
 
 # public url for Viber Bot