diff --git a/icvmapper/cli.py b/icvmapper/cli.py
index b91d37a..1dd214d 100755
--- a/icvmapper/cli.py
+++ b/icvmapper/cli.py
@@ -157,8 +157,8 @@ def main(args=None):
                 if args.t1w:
                     log_filepath = os.path.join(os.path.dirname(args.t1w), 'logs', '{}.log'.format(log_filename))
             else:
-				print("Error, must provide T1")
-				exit(0)
+                print("Error, must provide T1")
+                exit(0)
         else:
             log_filepath = os.path.join(os.getcwd(), '{}.log'.format(log_filename))