diff --git a/script/KR84_test.py b/script/KR84_test.py
index e330f9d..c443954 100644
--- a/script/KR84_test.py
+++ b/script/KR84_test.py
@@ -16,7 +16,7 @@ class all_statistics_data (object):
      ret_str = ret_str + "\nSaturation    :\t" + str(self.sat.min)[:7] + "\t" + str(self.sat.mean)[:7] + "\t" + str(self.sat.max)[:7] + "\t" + str(self.sat.stdev)[:7] 
      ret_str = ret_str + "\n5% out of sat :\t" + str(self.m5.min)[:7]  + "\t" + str(self.m5.mean)[:7]  + "\t" + str(self.m5.max)[:7]  + "\t" + str(self.m5.stdev)[:7] 
      ret_str = ret_str + "\n10% out of sat:\t" + str(self.m10.min)[:7] + "\t" + str(self.m10.mean)[:7] + "\t" + str(self.m10.max)[:7] + "\t" + str(self.m10.stdev)[:7] 
-     
+     return ret_str
 
 def statistics_calc(data_in):
     "function calculates the min/max/mean/stdev of an array"