diff --git a/script/local.py b/script/local.py
index 44af1ef..20f7f02 100644
--- a/script/local.py
+++ b/script/local.py
@@ -110,7 +110,7 @@ def convert_file(input_file_name, output_file_name, pol = None):
     sep = "\t"
     line_sep = "\n"
     if pol is None:
-        pol = str(pol_angle.read() if (MODE == "LINEAR") else pol_mode.readback.read())       
+        pol = pol_angle.read() if (MODE == "LINEAR") else pol_mode.readback.read()      
     with open(input_file_name) as inp:
         lines = inp.readlines()
         with open(output_file_name, "wb") as out: