diff --git a/src/firefly/plans/grid_scan.py b/src/firefly/plans/grid_scan.py
index 6d433ddd..aa7fed02 100644
--- a/src/firefly/plans/grid_scan.py
+++ b/src/firefly/plans/grid_scan.py
@@ -161,6 +161,7 @@ def queue_plan(self, *args, **kwargs):
     def ui_filename(self):
         return "plans/grid_scan.ui"
 
+
 # -----------------------------------------------------------------------------
 # :author:    Juanjuan Huang
 # :email:     juanjuan.huang@anl.gov