diff --git a/python/global_data_process.py b/python/global_data_process.py
index e078bd63..aa850c63 100755
--- a/python/global_data_process.py
+++ b/python/global_data_process.py
@@ -336,6 +336,7 @@ def read_frp_local(filename, lat, lon, fill_value):
                     + ".sfcf000.nc",
                 ]
             )
+            if os.path.isfile(f_frp) == True:
                 os.chmod(f_frp, 0o0755)
                 print("---- Download complete!")
             else: