diff --git a/csst_mci_sim/csst_mci_sim.py b/csst_mci_sim/csst_mci_sim.py
index 6e46edc58c8c2a62224af6ef171c70cafa2e6f7c..413cd675a087770f22a632f9a7153e0710ff3386 100644
--- a/csst_mci_sim/csst_mci_sim.py
+++ b/csst_mci_sim/csst_mci_sim.py
@@ -1713,7 +1713,7 @@ class MCIsimulator():
         theta = rotTelPos - rotSkyPos          
         
         ############ load star data catlog #####################            
-        starcat='selection_MACSJ0744.9 3927_20230517_concat.csv'
+        starcat='selection_20230517_concat.csv'
         #starcat='selection_yuyong20230609_sim.csv'        
         
         self.log.info('Stat catlog file name is %s' % (starcat))