diff --git a/csst/msc/calib_pos.py b/csst/msc/calib_pos.py
index c068ef22d47b7bfb9ecedecbb9f9047da8a42e16..ed91fef3a3caf169b46fe75230a6fcde8c531ffd 100644
--- a/csst/msc/calib_pos.py
+++ b/csst/msc/calib_pos.py
@@ -434,7 +434,7 @@ class CsstProcMscPositionCalibration(CsstProcessor):
     def prepare(self, dm):
         self.dm = dm
 
-    def run(self, img_list, wht_list, flg_list, ccd_ids, path_gaia, search_radius, pm_correct=True, wcs_refine=False, plot=False):
+    def run(self, img_list, wht_list, flg_list, fn_list, ccd_ids, path_gaia, search_radius, pm_correct=True, wcs_refine=False, plot=False):
         print('preparing files for position calibration....')
         #self.join_data(img_list, wht_list, flg_list)
         print('################## run sextractor ###################')