diff --git a/geomagio/Controller.py b/geomagio/Controller.py
index 47aa15be5b2211cfb77f6f2f93ee9d446c5f1799..019386fdbbfc59dfd55b38bfcd0a8e20a61c6960 100644
--- a/geomagio/Controller.py
+++ b/geomagio/Controller.py
@@ -382,8 +382,8 @@ def parse_args(args):
     parser.add_argument('--realtime',
             action='store_true',
             default=False,
-            help='Flag to run the last hour if interval is minute' +
-                    'or the last 10 minutes if interval is seconds')
+            help='Flag to run last hour if interval is minute, ' +
+                    'or last 10 minutes if interval is seconds')
 
     # Input group
     input_group = parser.add_mutually_exclusive_group(required=True)