diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index d3e2186a23d21dc338bd185dd898641dfd3f237d..59b9eea388c02475c941a9a371b1fac83d4c1216 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -99,7 +99,6 @@ except:
 ####################################################
 
 
-
 def checkInputList(input_list, n):
     if isinstance(type(input_list), list):
         # if type(input_list) != type([1, 2, 3]):